共 9 条
[2]
Hersch J., 1960, Z ANGEW MATH PHYS, V11, P387, DOI DOI 10.1007/BF01604498
[3]
KELLOGG OD, 1953, FOUNDATIONS POTENTIA
[6]
PAYNE LE, 1955, J MATH PHYS, V33, P291
[8]
Steklov M., 1902, ANN SCI ECOLE NORM S, V19, P455
[9]
WEINSTOCK R, 1954, J RATION MECH ANAL, V3, P745