共 5 条
[1]
NIKOLSKI.MS, 1974, DOKL AKAD NAUK SSSR+, V218, P1024
[2]
Pontryagin L.S., 1971, T MIAN USSR, V112, P30
[3]
PONTRYAGIN LS, 1969, DOKL AKAD NAUK SSSR+, V189, P721
[4]
Pontryagin LS., 1971, DIFF URAVN, V7, P436
[5]
[No title captured]