共 7 条
- [1] Bhatia N.P., 1970, STABILITY THEORY DYN
- [3] FILLIPOV AF, 1960, MAT SBORNIK, V51, P99
- [4] KALITIN BS, 1987, DOKL AKAD NAUK BELAR, V31, P971
- [5] KALITIN BS, 1986, DIFF URAVN, V22, P187
- [6] Nemytskii V. V., 1949, QUALITATIVE THEORY D
- [7] SAITO T, 1969, FUNKCIAL EKVAC, V11, P155