CCD Photometry of QSO 0957+561 A & B for the period 1987–1992 using La Palma archive

Author: Slavcheva-Mihova L.S.  

Publisher: Springer Publishing Company

ISSN: 0004-640X

Source: Astrophysics and Space Science, Vol.275, Iss.4, 2001-03, pp. : 385-389

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Abstract