共 50 条
- [27] BeppoSAX observations of 3C 273 ACTIVE X-RAY SKY: RESULTS FROM BEPPOSAX AND RXTE, 1998, : 449 - 452
- [28] INTENSITY VARIATIONS OF 3C 48 3C 196 + 3C 273 IN OPTICAL WAVELENGTHS ASTROPHYSICAL JOURNAL, 1964, 139 (01): : 416 - &
- [30] ARE FORBIDDEN LINES PRESENT IN THE OPTICAL-SPECTRUM OF THE QSO 3C 273 ASTROPHYSICAL JOURNAL, 1984, 283 (02): : 529 - 531