共 50 条
- [1] LIMIT-CIRCLE CLASSIFICATION OF SECOND-ORDER DIFFERENTIAL EXPRESSIONS [J]. QUARTERLY JOURNAL OF MATHEMATICS, 1972, 23 (90): : 193 - &
- [2] LIMIT-CIRCLE CRITERION FOR SECOND-ORDER DIFFERENTIAL OPERATORS [J]. QUARTERLY JOURNAL OF MATHEMATICS, 1973, 24 (96): : 451 - 455
- [3] LIMIT-POINT, LIMIT-CIRCLE CLASSIFICATION OF A SECOND-ORDER DIFFERENTIAL EQUATION WITH A COMPLEX COEFFICIENT [J]. JOURNAL OF THE LONDON MATHEMATICAL SOCIETY-SECOND SERIES, 1971, 4 (DEC): : 245 - &
- [4] LIMIT-CIRCLE DIFFERENTIAL EXPRESSIONS OF SECOND-ORDER WITH AN OSCILLATING COEFFICIENT [J]. QUARTERLY JOURNAL OF MATHEMATICS, 1973, 24 (94): : 257 - 263
- [5] REMARKS ON LIMIT-CIRCLE CLASSIFICATION OF SECOND-ORDER DIFFERENTIAL OPERATORS [J]. QUARTERLY JOURNAL OF MATHEMATICS, 1973, 24 (95): : 423 - 425
- [6] LIMIT-POINT, LIMIT-CIRCLE CLASSIFICATION OF SECOND-ORDER ORDINARY DIFFERENTIAL EQUATIONS [J]. QUARTERLY JOURNAL OF MATHEMATICS, 1973, 24 (96): : 531 - 535
- [7] ON 2ND-ORDER DIFFERENTIAL-EQUATION OF LIMIT-CIRCLE TYPE [J]. KEXUE TONGBAO, 1983, 28 (12): : 1595 - 1599
- [10] Limit cycles of a second-order differential equation [J]. APPLIED MATHEMATICS LETTERS, 2019, 88 : 111 - 117