共 23 条
[3]
AMES WF, 1972, NONLINEAR PARTIAL DI, V2, P44
[4]
Clairin M.J., 1903, ANN TOULOUSE, V5, P437
[5]
EISENHART L, 1960, TREATISE DIFFERENTIA, P284
[6]
FORSYTH AR, 1959, THEORY DIFFERENTIAL, V6, pCH21
[8]
Goursat E., 1925, PROBLEME BACKLUND
[9]
HIROTA R, TO BE PUBLISHED