共 10 条
[1]
Adams R.A., 2003, PURE APPL MATH SOB O, V2nd ed.
[3]
BAHRI A, 1985, CR ACAD SCI I-MATH, V301, P145
[4]
Castro A., 1981, B UNIONE MAT ITAL, V18-B, P733
[5]
CASTRO A, IN PRESS J MATH ANAL
[7]
Fucik S., 1975, C AS PE ST MAT, V100, P160