共 6 条
[1]
GERBER R, 1958, CR HEBD ACAD SCI, V247, P708
[2]
GILBARG D, 1952, J RATION MECH ANAL, V1, P309
[3]
GILBARG D, 1953, J RAT MECH ANAL, V3, P563
[4]
LAVRENTIEV M, 1958, METHODES THEORIE FON, P334
[5]
SERRIN JB, 1952, J RATION MECH ANAL, V1, P1
[6]
SERRIN JB, 1952, AM J MATH, V74, P492