共 11 条
[3]
UPPER LIMITS OF X-RAY FLUXES FROM SOME QUASARS
[J].
NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA B-GENERAL PHYSICS RELATIVITY ASTRONOMY AND MATHEMATICAL PHYSICS AND METHODS,
1970, 65 (02)
:181-&
[4]
MEASUREMENT OF PULSATION RATIO OF CRAB NEBULA IN X-RAY REGION FROM 20 TO 80 KEV
[J].
NATURE-PHYSICAL SCIENCE,
1971, 229 (04)
:113-+