共 22 条
[5]
ENGEL MH, 1983, NATURE, V296, P837
[6]
GEBALLE T, 1986, IAU4212 CIRC
[7]
Greenberg J. M., 1982, COMETS, P131
[8]
Greenberg J.M., 1973, MOL GALACTIC ENV, P94
[9]
HANNER MS, 1985, ASTRON ASTROPHYS, V152, P177