Bartelmann, M., & Schneider, P. (1993). Large-scale correlations between QSOs and galaxies: An effect caused by gravitational lensing? Astronomy and astrophysics, 268(1), .
Chicago Style (17th ed.) CitationBartelmann, Matthias, and Peter Schneider. "Large-scale Correlations Between QSOs and Galaxies: An Effect Caused by Gravitational Lensing?" Astronomy and Astrophysics 268, no. 1 (1993).
MLA (9th ed.) CitationBartelmann, Matthias, and Peter Schneider. "Large-scale Correlations Between QSOs and Galaxies: An Effect Caused by Gravitational Lensing?" Astronomy and Astrophysics, vol. 268, no. 1, 1993.
Warning: These citations may not always be 100% accurate.