00796nam0-22002531i-450-990001182980403321000118298FED01000118298(Aleph)000118298FED0100011829820000920d1979----km-y0itay50------baengTopological Degree Methods in Nonlinear Boundary Value Problemsby MAWHIN J.Providence (RI)American Mathematical Society1979Regional conference series in mathematics40Mawhin,Jean3912ITUNINARICAUNIMARCBK990001182980403321C-35-(4020623MA1MA1Topological Degree Methods in Nonlinear Boundary Value Problems342456UNINAING01