共 50 条
- [31] OSCILLATION OF NONLINEAR DIFFERENTIAL-EQUATIONS OF 2ND-ORDER PUBLICATIONES MATHEMATICAE-DEBRECEN, 1992, 40 (1-2): : 143 - 153
- [33] OSCILLATION THEOREMS FOR CERTAIN 2ND-ORDER DELAY EQUATIONS ATTI DELLA ACCADEMIA NAZIONALE DEI LINCEI RENDICONTI-CLASSE DI SCIENZE FISICHE-MATEMATICHE & NATURALI, 1974, 56 (04): : 487 - 494
- [34] THEOREM OF INTERIOR DERIVATIVE FOR THE 2ND-ORDER UNIFORMLY PARABOLIC EQUATION DOKLADY AKADEMII NAUK SSSR, 1988, 299 (02): : 280 - 283
- [36] A UNIQUENESS THEOREM FOR 2ND-ORDER ELLIPTIC-EQUATIONS MATHEMATICS OF THE USSR-SBORNIK, 1986, 129 (3-4): : 399 - 410