共 5 条
[1]
Bertrand G., 1923, B SCI MATH, V47, P282
[3]
Lewy H., 1950, U CALIF PUBL MATH, V1, P247
[4]
Muskhelishvili N.I., 1953, SINGULAR INTEGRAL EQ
[5]
VOYTUK JA, 1962, THESIS CARNEGIE I TE