Hansj?rg Kielh?fer
Bifurcation theory: an introduction with applications to partial differential equations
(Applied Mathematical Sciences ; 156) 2. ed. (Springer: New York, NY, 2012)
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Hansj?rg Kielh?fer
Variationsrechnung : eine Einführung in die Theorie einer unabh?ngigen Variablen mit Beispielen und Aufgaben
(Vieweg + Teubner: Wiesbaden, 2010)
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Stefan Kr?mmer and Hansj?rg Kielh?fer
Radially symmetric critical points of non-convex functionals
Proceedings of the Royal Society of Edinburgh: Section A Mathematics 138, 1261-1280 (2008)
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M. Lilli, T. J. Healey and Hansj?rg Kielh?fer
Singular perturbation as a selection criterion for Young-measure solutions
SIAM Journal on Mathematical Analysis 39, 195-209 (2007)
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Stefan Kr?mer, Timothy J. Healey and Hansj?rg Kielh?fer
Bifurcation with a two-dimensional kernel
Journal of Differential Equations 220, 234-258 (2006)
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Stefan Kr?mer and Hansj?rg Kielh?fer
Radially symmetric critical points of nonconvex functionals
preprint (2006)
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Hansj?rg Kielh?fer
Bifurcation theory : an introduction with applications to PDEs
(Applied mathematical sciences ; 156) (Springer: New York [u.a.], 2004)
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Hansj?rg Kielh?fer
Critical points of nonconvex and noncoercive functionals
Calculus of Variations and Partial Differential Equations 16, 243-272 (2003)
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A Corrigenda to this article was published on 01 December 2004: https://doi.org/10.1007/s00526-004-0274-9

Christoph Gugg, Hansj?rg Kielh?fer and Michael Niggemann
On the approximation of the stochastic Burgers equation
Communications in Mathematical Physics 230, 181-199 (2002)
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Timothy J. Healey, Hansj?rg Kielh?fer and Errol L. Montes-Pizarro
Free nonlinear vibrations for plate equations on the equilateral triangle
Nonlinear Analysis: Theory, Methods & Applications 44, 575-599 (2001)
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Hansj?rg Kielh?fer and Timothy J. Healey
Global continuation via higher gradient regularization and singular limits in forced one-dimensional phase transition
SIAM Journal on Mathematical Analysis 31, 1307-1331 (2000)
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Hansj?rg Kielh?fer
Minimizing sequences selected via singular perturbations and their pattern formation
Archive for Rational Mechanics and Analysis 155, 261-276 (2000)
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Christoph Gugg, Timothy J. Healey, Hansj?rg Kielh?fer and Stanislaus Maier-Paape
Nonlinear standing and rotating waves on the sphere
Journal of Differential Equations 166, 402-442 (2000)
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Hansj?rg Kielh?fer
Pattern formation of minimizing sequences of the stationary Cahn-Hilliard model
in: Equadiff 99 : Proceedings of the International Conference on Differential Equations ; Berlin, Germany, 1 – 7 August 1999, ed. by Bernold Fiedler, Konrad Gr?ger and Jürgen Sprekels, 506-511 (World Scientific: Singapore, 2000)
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Timothy J. Healey and Hansj?rg Kielh?fer
Free nonlinear vibrations for a class of two-dimensional plate equations standing and discrete-rotating waves
Nonlinear Analysis: Theory, Methods & Applications 29, 501-531 (1997)
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Hansj?rg Kielh?fer
Pattern formation of the stationary Cahn-Hilliard model
Proceedings of the Royal Society of Edinburgh: Section A Mathematics 127, 1219-1243 (1997)
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Paul C. Fife, Hansj?rg Kielh?fer, Stanislaus Maier-Paape and Thomas Wanner
Perturbation of doubly periodic solution branches with applications to the Cahn- Hilliard equation
Physica D: Nonlinear Phenomena 100, 257-278 (1997)
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Hansj?rg Kielh?fer
Generic s1-equivariant vector fields
Journal of Dynamics and Differential Equations 6, 277-300 (1994)
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Timothy J. Healey, Hansj?rg Kielh?fer and Charles A. Stuart
Global branches of positive weak solutions of semilinear elliptic problems over non-smooth domains
Proceedings of the Royal Society of Edinburgh: Section A Mathematics 124, 371-388 (1994)
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Marco Holzmann and Hansj?rg Kielh?fer
Uniqueness of global positive solution branches of nonlinear elliptic problems
Mathematische Annalen 300, 221-241 (1994)
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Hansj?rg Kielh?fer and Stanislaus Maier-Paape
Infinitely many positive solutions of semilinear elliptic problems via sub- and supersolutions
Communications in Partial Differential Equations 18, 1219-1229 (1993)
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Timothy J. Healey and Hansj?rg Kielh?fer
Preservation of nodal structure on global bifurcating solution branches of elliptic equations with symmetry
Journal of Differential Equations 106, 70-89 (1993)
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Timothy J. Healey and Hansj?rg Kielh?fer
Separation of global solution branches of elliptic systems with symmetry via nodal properties
Nonlinear Analysis: Theory, Methods & Applications 21, 665-684 (1993)
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Timothy J. Healey and Hansj?rg Kielh?fer
Hidden symmetry of fully nonlinear boundary conditions in elliptic equations : global bifurcation and nodal structure
Results in Mathematics 21, 83-92 (1992)
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Hansj?rg Kielh?fer
Hopf bifurcation from a differentiable viewpoint
Journal of Differential Equations 97, 189-232 (1992)
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Timothy J. Healey and Hansj?rg Kielh?fer
Positivity of global branches of fully nonlinear elliptic boundary value problems
Proceedings of the American Mathematical Society 115, 1031-1036 (1992)
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Hansj?rg Kielh?fer
Smoothness and asymptotics of global positive branches of u+ f(u) = 0
Zeitschrift für angewandte Mathematik und Physik ZAMP 43, 139-153 (1992)
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Hansj?rg Kielh?fer
Smoothness of global positive branches of nonlinear elliptic problems over symmetric domains
Mathematische Zeitschrift 211, 41-48 (1992)
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Timothy J. Healey and Hansj?rg Kielh?fer
Symmetry and preservation of nodal structure in elliptic equations satisfying fully nonlinear Neumann boundary conditions
in: Bifurcation and Symmetry : Cross Influence between Mathematics and Applications, ed. by L. Allgower, Klaus B?hmer and M. Golubitsky, (International Series of Numerical Mathematics / Internationale Schriftenreihe zur Numerischen Mathematik / Série Internationale d’Analyse Numérique ; 104) 169-177 (Birkh?user: Basel, 1992)
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Timothy J. Healey and Hansj?rg Kielh?fer
Symmetry and nodal properties in the global bifurcation analysis of quasi-linear elliptic equations
Archive for Rational Mechanics and Analysis 113, 299-311 (1991)
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Hansj?rg Kielh?fer
A bifurcation theorem for potential operators and an application to wave equations
in: Proceedings of the International Conference on Bifurcation Theory and its Numerical Analysis : 4-9 July, 1988, Xi'an, China, ed. by Li Kaitai, J. Marsden, M. Golubitsky and G. Iooss, 270-276 (Xi'an Jiaotong University Press: Xi?an, 1989)
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Hansj?rg Kielh?fer
A bifurcation theorem for potential operators
Journal of Functional Analysis 77, 1-8 (1988)
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Hansj?rg Kielh?fer
Das Unberechenbare
Jahrbuch der Universit?t Augsburg 1987, 209-214 (1988)
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Hansj?rg Kielh?fer and Paul K?tzner
Stable periods of a semilinear wave equation and bifurcation of periodic solutions
Zeitschrift für angewandte Mathematik und Physik (ZAMP) 38, 204-212 (1987)
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Hansj?rg Kielh?fer
Interaction of periodic and stationary bifurcation from multiple eigenvalues
Mathematische Zeitschrift 192, 159-166 (1986)
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Hansj?rg Kielh?fer
Multiple eigenvalue bifurcation for Fredholm operators
Journal für die reine und angewandte Mathematik (Crelles Journal) 1985, 104-124 (1985)
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Hansj?rg Kielh?fer and Reiner Lauterbach
On the principle of reduced stability
Journal of Functional Analysis 53, 99-111 (1983)
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Hansj?rg Kielh?fer
Floquet exponents of bifurcating periodic orbits
Nonlinear Analysis: Theory, Methods & Applications 6, 571-583 (1982)
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Hansj?rg Kielh?fer
A bunch of stationary or periodic solutions near an equilibrium by a slow exchange of stability
in: Nonlinear Differential Equations: Invariance, Stability, and Bifurcation, ed. by Piero de Mottoni and Luigi Salvadori, 207-219 (Academic Press: New York, NY, 1981)
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Hansj?rg Kielh?fer
Degenerate bifurcation at simple eigenvalues and stability of bifurcating solutions
Journal of Functional Analysis 38, 416-441 (1980)
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Hansj?rg Kielh?fer
Global solutions of semilinear evolution equations satisfying an energy inequality
Journal of Differential Equations 36, 188-222 (1980)
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Hansj?rg Kielh?fer
Bifurcation of periodic solutions for a semilinear wave equation
Journal of Mathematical Analysis and Applications 68, 408-420 (1979)
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Hansj?rg Kielh?fer and K. Kirchg?ssner
Generalized Hopf bifurcation in Hilbert space
Mathematical Methods in the Applied Sciences 1, 498-513 (1979)
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Hansj?rg Kielh?fer
Hopf bifurcation at multiple eigenvalues
Archive for Rational Mechanics and Analysis 69, 53-83 (1979)
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Hansj?rg Kielh?fer
On the Lyapunov-stability of stationary solutions of semilinear parabolic differential equations
Journal of Differential Equations 22, 193-208 (1976)
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Hansj?rg Kielh?fer
Verzweigung periodischer L?sungen in mehrfachen Eigenwerten
(Universit?t Stuttgart: Stuttgart, 1976)
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Stuttgart, Univ., Habil.-Schr., 1976

Hansj?rg Kielh?fer
Existenz und Regularit?t von L?sungen semilinearer parabolischer Anfangs-Randwertprobleme
Mathematische Zeitschrift 142, 131-160 (1975)
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Hansj?rg Kielh?fer
?ber ein semilineares singul?res Anfangs-Randwertproblem
in: Zeitschrift für angewandte Mathematik und Mechanik: ZAMM, T 204-T 205 (Akad.-Verl.: Berlin, 1975)
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Hansj?rg Kielh?fer
Halbgruppen und semilineare Anfangs-Randwertprobleme
manuscripta mathematica 12, 121-152 (1974)
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Hansj?rg Kielh?fer
Stability and semilinear evolution equations in Hilbert space
Archive for Rational Mechanics and Analysis 57, 150-165 (1974)
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Klaus Kirchg?ssner and Hansj?rg Kielh?fer
Stability and bifurcation in fluid dynamics
Rocky Mountain Journal of Mathematics 3, 275-318 (1973)
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Hansj?rg Kielh?fer
Stabilit?t bei fastlinearen Evolutionsgleichungen
in: Methoden und Verfahren der mathematischen Physik: Band 9, ed. by Bruno Brosowski, (BI-Hochschultaschenbücher) 161-170 (Bibliographisches Institut: Mannheim, 1973)
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Hansj?rg Kielh?fer
Hilbertraum - Theorie für fastlineare Anfangswertprobleme
(1972)
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Druckausgabe erschienen als Bochum, Univ., Diss., 1972.