共 20 条
[1]
AFTABIZADEH R, 1985, 6TH P INT C NONL AN, P1
[2]
Agarwal R. P., 1979, B I MATH ACAD SIN, V7, P211
[3]
Agarwal R. P., 1976, J MATH PHYS SCI, V10, P17
[5]
Bailey P. B., 1968, NONLINEAR 2 POINT BO