共 14 条
[1]
BERZIN R, 1979, J MATH PURE APPL, V58, P165
[2]
DEMAY Y, 1974, CR ACAD SCI A MATH, V278, P771
[3]
FRIEDRICHS KO, 1968, LECT NOTES COURANT I
[4]
CAUCHY-PROBLEM FOR DIFFERENTIAL-EQUATIONS WITH DOUBLE CHARACTERISTICS
[J].
JOURNAL D ANALYSE MATHEMATIQUE,
1977, 32
:118-196
[5]
Ivrii V., 1974, ENGLISH TRANSLATION, V29, P3
[6]
Ivrii V., 1978, ENGLISH TRANSLATION, V34, P149
[7]
Kajitani K., 1973, PUBL RIMS, V9, P597
[8]
Kasahara K., 1960, MEM COLL SCI U KYOTO, V33, P1
[9]
KOUTEV ND, 1976, ANN SOFIA U MATH FAC, V67, P375