共 50 条
- [1] LIMIT-CIRCLE CLASSIFICATION OF SECOND-ORDER DIFFERENTIAL EXPRESSIONS QUARTERLY JOURNAL OF MATHEMATICS, 1972, 23 (90): : 193 - &
- [2] LIMIT-CIRCLE CRITERION FOR SECOND-ORDER DIFFERENTIAL OPERATORS QUARTERLY JOURNAL OF MATHEMATICS, 1973, 24 (96): : 451 - 455
- [4] LIMIT-POINT, LIMIT-CIRCLE CLASSIFICATION OF A SECOND-ORDER DIFFERENTIAL EQUATION WITH A COMPLEX COEFFICIENT JOURNAL OF THE LONDON MATHEMATICAL SOCIETY-SECOND SERIES, 1971, 4 (DEC): : 245 - &
- [5] REMARKS ON LIMIT-CIRCLE CLASSIFICATION OF SECOND-ORDER DIFFERENTIAL OPERATORS QUARTERLY JOURNAL OF MATHEMATICS, 1973, 24 (95): : 423 - 425
- [6] LIMIT-POINT, LIMIT-CIRCLE CLASSIFICATION OF SECOND-ORDER ORDINARY DIFFERENTIAL EQUATIONS QUARTERLY JOURNAL OF MATHEMATICS, 1973, 24 (96): : 531 - 535
- [8] LIMIT-CIRCLE CRITERIA FOR 2ND-ORDER DIFFERENTIAL-EXPRESSIONS QUARTERLY JOURNAL OF MATHEMATICS, 1984, 35 (140): : 415 - 427
- [9] PERTURBATIONS OF LIMIT-CIRCLE EXPRESSIONS NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1976, 23 (01): : A120 - A121