共 25 条
[3]
EPSTEIN A, 1979, B AAS, V11, P467
[4]
GIACCONI R, 1979, ASTROPHYS J, V234, pL1, DOI 10.1086/183099
[9]
HOFFLEIT D, 1939, P AM PHILOS SOC, V81, P265
[10]
KU WHM, 1979, HEAO SCI S MSFC