共 18 条
- [12] TURNER EL, 1982, UNPUB
- [14] 0957+561-A, B - TWIN QUASISTELLAR OBJECTS OR GRAVITATIONAL LENS [J]. NATURE, 1979, 279 (5712) : 381 - 384
- [15] THE TRIPLE QSO PG1115+08 - ANOTHER PROBABLE GRAVITATIONAL LENS [J]. NATURE, 1980, 285 (5767) : 641 - 643
- [16] Q0957+561 - DETAILED MODELS OF THE GRAVITATIONAL LENS EFFECT [J]. ASTROPHYSICAL JOURNAL, 1981, 244 (03) : 736 - 755
- [18] YOUNG P, 1981, PREPRINT