UV spectra of the twin QSOs 0957+561 A, B

This publication has 4 references indexed in Scilit:

• VLBI Observations of the double QSO, 0957 + 561 A, B
  Nature, 1979
• The Double Quasar 0957+561: A Radio Study at 6-Centimeters Wavelength
  Science, 1979
• Radio studies of the double QSO, 0957 + 561A, B
  Nature, 1979
• 0957 + 561 A, B: twin quasistellar objects or gravitational lens?
  Nature, 1979