共 7 条
[1]
Gel'fand I.M., 1959, NAUK, V14, P87
[2]
KRUZKOV S, 1970, MATH USSR SBORNIK, V10
[4]
LI CZ, 1963, THESIS U SCI TECHNOL
[5]
OLEINIK OD, 1960, P SOVIET NATIONAL C, P133
[6]
TUNG C, 1981, J MATH ANAL APPL, V79, P436
[7]
[No title captured]