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[21] Iterations and Fixpoints, Pacific Journal of Math. 68, 73 - 79 (1977)
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[22] Pure soliton solutions of some nonlinear Partial Differential Equations,
Commun.Mathematical Physics 55, 187 - 194 (1977)
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[23] [als Jan Felix]: Widerspruchsfreiheit und Unabhängigkeit, Jahrbuch Überblicke Mathematik 1977, p.9-27, Bibliographisches Institut, Mannheim (1977) |
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[24] [together with M. Neumann]: Small boundaries, Arch.Math. 30, 613 - 621 (1978) |
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[25] Application of Hereditary Symmetries to Nonlinear Evolution Equations,
Nonlinear Analysis 3, 849 - 862 (1979)
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[26] [together with J. Horvath]: Die Bedeutung der Schnitteigenschaften beim Hahn-Banachschen Satz, Jahrbuch Überblicke Mathematik 1979, 107-121 |
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[26a] [together with J. Horvath]: Addendum to [26], Jahrbuch Überblicke Mathematik 1984, 273-275 |
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[27] [together with A. Schröder]: Production and Distribution, in: Game Theory and Related Topics, North Holland Publishers, 281-290 (1979) Editors: O. Möschlin, D. Pallaschke |
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[28] [together with H. König]: New Versions of the Hahn-Banach Theorem, in: General Inequalities, ISNM 47 (Editor: E.F. Beckenbach), Birkhäuser-Verlag, 255-266 (1980) |
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[29] Application of Spectral Gradient Methods to Nonlinear Equations, unpublished but widely quoted
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[30] [together with A.S. Fokas]: On the Structure of Symplectic Operators and Hereditary Symmetries, L. Nuovo Cimento, 28, 299-307 (1980) |