共 6 条
[1]
[Anonymous], 1937, P PHYS MATH SOC JPN
[2]
Coddington E. A., 1955, THEORY ORDINARY DIFF
[3]
DUNFOLD N, LINEAR OPERATORS 1
[5]
LEES M, 1961, J MATH MECH, V10, P423
[6]
PICARD B, 1930, LECONS QUELQUES PROB