共 29 条
[11]
KAHN FD, 1968, PLANETARY NEBULAE, P236
[12]
KRISHNASWAMY KS, 1968, ASTROPHYS J, V151, pL61
[13]
KRISHNASWAMY KS, 1968, MON NOT R ASTRON SOC, V139, P283
[18]
MEZGER PG, 1968, INTERSTELLAR IONIZED, P33
[19]
INFRARED SOURCES IN TRAPEZIUM REGION OF M42
[J].
ASTROPHYSICAL JOURNAL,
1969, 155 (3P2)
:L193-&
[20]
PIKELNER SB, 1968, ASTROPHYS LETT COMM, V2, P97