共 50 条
- [2] THEOREMS OF LIOUVILLE TYPE FOR ELLIPTIC SYSTEMS OF PARTIAL-DIFFERENTIAL EQUATIONS [J]. ATTI DELLA ACCADEMIA NAZIONALE DEI LINCEI RENDICONTI-CLASSE DI SCIENZE FISICHE-MATEMATICHE & NATURALI, 1974, 56 (03): : 293 - 296
- [3] NOTE ON CHARACTERISTICS FOR SECOND-ORDER PARTIAL-DIFFERENTIAL EQUATIONS [J]. MATRIX AND TENSOR QUARTERLY, 1975, 25 (03): : 109 - 111
- [4] EXISTENCE OF FUNDAMENTAL SOLUTIONS FOR DEGENERATE OR SINGULAR, SECOND-ORDER, LINEAR, ELLIPTIC PARTIAL-DIFFERENTIAL EQUATIONS [J]. NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1975, 22 (01): : A154 - A154
- [9] Comparison Theorems for Second-Order Damped Nonlinear Differential Equations [J]. DIFFERENTIAL AND DIFFERENCE EQUATIONS WITH APPLICATIONS, 2018, 230 : 627 - 634