共 13 条
[4]
EISENHART LP, RIEMANNIAN GEOMETRYT, P238
[5]
HEINRICH O, ZENTRALINSTITUT ASTR
[6]
KERNER R, 1968, ANN I H POINCARE A, V9, P143
[9]
OSTRIKER J, 1986, PHYS LETT B, V2180, P231