共 15 条
[2]
[Anonymous], 1968, LINEAR DIFFERENTIAL
[3]
[Anonymous], 1952, IZV AKAD NAUK SSSR M
[4]
[Anonymous], DOGA T J MATH
[5]
[Anonymous], 1988, DIFF INT EQUAT
[8]
Coddington E. A., 1955, THEORY ORDINARY DIFF
[10]
GASYMOV MG, 1989, DIFF EQUAT+, V25, P394