共 21 条
[1]
Bateman H., 1932, PARTIAL DIFFERENTIAL
[4]
Courant R, 1914, J REINE ANGEW MATH, V144, P190
[6]
COURANT R, 1937, METHODEN MATH PHYSIK, V2
[8]
Gevrey M., 1918, ANN SCI ECOLE NORM S, V35, P129
[9]
HADAMARD, 1906, B SOC MATH FRANCE, V34, P135
[10]
Hilbert D, 1924, GRUNDZUGE ALLGEMEINE, V2nd