共 55 条
[2]
AGMON S, 1965, LECTURES ELLIPTIC BO
[3]
ALVINO A, 1979, ANN MAT PURA APPL, V120, P269
[4]
AZIZ AK, 1972, MATH F FINITE ELEMEN
[6]
AZZAM A, ANN ACAD SCI FENN
[7]
AZZAM A, ANN POLON MATH
[10]
Babuska I., 1972, MATH FDN FINITE ELEM, P1