共 6 条
[1]
Filippov A. F., 1970, Prikladnaya Matematika i Mekhanika, V34, P1076
[2]
FILIPPOV AF, 1964, PMM, V28
[3]
GOURSAT E, COURSE MATHEMATICAL
[4]
POPOV AV, 1968, AKUST ZH, V14
[5]
WESTON VH, 1965, RADIO SCI D, V69, P1257
[6]
1961, PROBLEMS DYNAMIC THE