共 50 条
- [42] MULTIPLE SOLUTIONS FOR NONLINEAR ELLIPTIC BOUNDARY-VALUE PROBLEMS [J]. NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1972, 19 (01): : A138 - &
- [49] NON-LOCAL ELLIPTIC BOUNDARY-VALUE PROBLEMS [J]. CANADIAN JOURNAL OF MATHEMATICS, 1968, 20 (06): : 1365 - &