On Schauder's fixed point theorem and forced second-order nonlinear oscillations

Journal of Mathematical Analysis and Applications - Tập 21 - Trang 421-425 - 1968
A.C Lazer1
1Department of Mathematics, Case-Western Reserve University Cleveland, Ohio 44106 USA

Tài liệu tham khảo

Cronin, 1964, Fixed Points and Topological Degree in Nonlinear Analysis