共 50 条
- [42] REPRESENTATIONS OF SOLUTIONS OF PERIODIC 2ND ORDER LINEAR-DIFFERENTIAL EQUATIONS JOURNAL FUR DIE REINE UND ANGEWANDTE MATHEMATIK, 1983, 344 : 1 - 21
- [46] Oscillation and Nonoscillation of Higher Order Self-Adjoint Differential Equations Czechoslovak Mathematical Journal, 2002, 52 : 833 - 849
- [48] Periodic solutions of second order self-adjoint difference equations JOURNAL OF THE LONDON MATHEMATICAL SOCIETY-SECOND SERIES, 2005, 71 : 146 - 160
- [50] DEVIATIONS OF SOLUTIONS OF LINEAR 2ND ORDER EQUATIONS IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII MATEMATIKA, 1981, (10): : 18 - 22