共 19 条
[1]
BERGMAN S, 1952, KERNEL FUNCTIONS MAT
[2]
DARBOUX G, 1915, LECONS THEORIE GENER, V2
[3]
FRIEDRICHS K, 1933, MATH ANN, V109, P60
[4]
GARABEDIAN PR, 1952, J RATION MECH ANAL, V1, P359
[6]
GILBARG D, 1952, J RATION MECH ANAL, V1, P309
[7]
Lavrentieff M., 1938, REC MATH MATH SBORNI, V46, P391