共 50 条
- [1] UNIQUENESS THEOREMS FOR A CLASS OF 2ND-ORDER DIFFERENTIAL EQUATIONS AMERICAN MATHEMATICAL MONTHLY, 1967, 74 (09): : 1178 - &
- [3] COMPARISON THEOREMS FOR A CLASS OF SECOND-ORDER NONLINEAR ORDINARY DIFFERENTIAL EQUATIONS NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1973, 20 (05): : A523 - A523