共 18 条
[1]
[Anonymous], APJS
[3]
HERBIG GH, PRIVATE COMMUNICATIO
[5]
KOBOLD H, 1938, AN, V266, P95
[6]
KRAFT RP, 1961, SCIENCE, V134, P1433
[8]
MERRILL JE, 1953, 24 CONTR PRINC U OBS
[9]
MERRILL JE, 1952, 25 CONTR PRINC U OBS
[10]
MERRILL JE, 1953, 23 CONTR PRINC U OBS