共 25 条
[1]
AZBELEV N, 1964, SOV MATH DOKL, V5, P611
[4]
Filippov A.F., 1964, TRANSACTION AMS, V42, P199, DOI DOI 10.1090/TRANS2/042/13
[6]
KAMKE E, 1929, TOHOKU MATH J, V31, P72
[7]
Matrosov V.M., 1967, DIFF EQUAT+, V3, P395
[8]
MATROSOV VM, 1967, DIFF URAVN, V3, P839
[9]
NAGUMO M, 1927, JAPAN J MATH, V4, P215