共 18 条
- [11] OPTICAL VARIABILITY OF A BRIGHT NEW QUASI-STELLAR SOURCE [J]. NATURE, 1971, 232 (5313) : 622 - &
- [12] VERIFICATION OF RADIO VARIABILITY OF GALAXY PKS 0048-09 [J]. NATURE, 1970, 226 (5244) : 431 - &
- [13] SHIMMINS AJ, 1966, AUST J PHYS, V19, P837
- [15] Stull M A, 1970, Nature, V225, P832, DOI 10.1038/225832a0