共 50 条
- [1] BOUNDEDNESS OF SOLUTIONS OF 2ND-ORDER DIFFERENTIAL-EQUATIONS AND 2ND-ORDER DIFFERENTIAL-EQUATIONS WITH DELAY CHINESE SCIENCE BULLETIN, 1989, 34 (02): : 171 - 172
- [4] PERIODICAL SOLUTIONS OF THE SYSTEM OF 2ND-ORDER DIFFERENTIAL-EQUATIONS VESTNIK LENINGRADSKOGO UNIVERSITETA SERIYA MATEMATIKA MEKHANIKA ASTRONOMIYA, 1984, (02): : 98 - 101
- [10] ON INTEGRALS OF COMBINATIONS OF SOLUTIONS OF 2ND-ORDER DIFFERENTIAL-EQUATIONS JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1986, 19 (17): : 3701 - 3703