共 7 条
[3]
BROWDER FE, 1966, ARCH RATION MECH AN, V21, P259
[6]
Krasnosel'skiic MA., 1955, USP MAT NAUK, V10, P123
[7]
Schaefer H., 1957, JBER DTSCH MATH VERE, V59, P131