共 14 条
[2]
EICHENHERR H, 1979, NUCL PHYS B, V155, P544
[6]
Helgason S., 1962, DIFFERENTIAL GEOMETR
[8]
MIKHAILOV AV, 1981, UNPUB INTEGRATION NO
[10]
SEMIONOVTIANSHA.MA, 1977, VESTN LENINGR UN, V13, P81