共 8 条
[2]
Chern S.S., 1974, ACTA MATH, V133, P219
[3]
HERMANN R, 1964, J MATH MECH, V13, P667
[4]
Kobayashi S, 1956, CAN J MATH, V8, P145
[7]
Tanaka N., 1962, J MATH SOC JAPAN, V14, P397
[8]
TANAKA N, 1970, J MATH KYOTO U, V8, P1