共 34 条
[1]
EGGEN OJ, 1961, 24 ROY OBS B
[3]
GICLAS HL, 1959, LOWELL OBS B, V4, P212
[4]
Hartwick F. D. A., 1972, Astrophysical Journal, V174, P557, DOI 10.1086/151518
[8]
HESSER JE, 1976, IAU2990 CIRC
[9]
HESSER JE, 1971, NEW DIRECTIONS NEW F
[10]
HESSER JE, 1971, WHITE DWARFS, P41