All Tables

• Table 1: Increase with time of the number of known QSOs, BL Lacs and Seyfert 1s.
• Table 2: Gravitationally lensed quasars. Column 1: name, Col. 2: short 1950 position, Col. 3: redshift of the quasar, Col. 4: redshift of the lens, Col. 5: separation in arcsec, Col. 6: references.
• Table 3: Quasar pairs. Column 1: name, Col. 2: short 1950 position, Col. 3: redshift of the quasar, Col. 4: separation in arcsec, Col. 5: references (see Table 2).