共 50 条
- [43] MULTIPLE SOLUTIONS FOR FOURTH-ORDER ORDINARY DIFFERENTIAL INCLUSIONS [J]. DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES S, 2024,
- [44] Positive solutions of a fourth-order ordinary differential equation [J]. Lanzhou Daxue Xuebao/Journal of Lanzhou University, 2001, 37 (04):
- [47] ZEROS OF SOLUTIONS OF ORDINARY SECOND ORDER DIFFERENTIAL EQUATIONS [J]. JOURNAL OF THE LONDON MATHEMATICAL SOCIETY, 1968, 43 (172P): : 593 - &