共 12 条
[1]
CESARI L, 1971, ASYMPTOTIC BEHAVIOR
[2]
COURANT R, 1962, METHODS MATH PHYSICS, V2
[5]
ECKHOFF KS, 1975, 54 U BERG DEP APPL M
[6]
Friedlander FG., 1958, SOUND PULSES
[10]
Movchan A. A., 1960, PRIKLADNAIA MAT MEKH, V24, P1506