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Nichtlineare Gleichungen und Abbildungsgrade. (German) Zbl 0281.47033
Hochschultext. Berlin-Heidelberg-New York: Springer-Verlag. VIII, 131 S. DM 16.80; $ 6.90 (1974).

47Hxx Nonlinear operators and their properties
47-02 Research exposition (monographs, survey articles) pertaining to operator theory
54H25 Fixed-point and coincidence theorems (topological aspects)
55M20 Fixed points and coincidences in algebraic topology
55M25 Degree, winding number