共 8 条
- [1] GOLDSCHMIDT H, 1967, J DIFFER GEOM, V1, P269
- [2] KOBAYASHI S, 1969, F DIFFERENTIAL GEOME, V2
- [4] Pommaret J. F., 1978, SYSTEMS PARTIAL DIFF
- [5] ROSLY AA, 1983, YAD FIZ, V37, P786
- [6] ROSLY AA, COMMUN MATH PHYS
- [8] STERNBERG S, 1964, LECTURES DIFFERENTIA