共 22 条
- [1] Cabada A, 2000, DYN CONTIN DISCRET I, V7, P145
- [2] CHEN LJ, IN PRESS J MATH ANAL
- [4] Ding W., 2004, APPL MATH COMPUT, V155, P709
- [6] Franco D, 2003, MATH INEQUAL APPL, V6, P477
- [7] Franco D, 2000, MATH NACHR, V218, P49, DOI 10.1002/1522-2616(200010)218:1<49::AID-MANA49>3.0.CO
- [8] 2-6