Wambsganß, J. (1999). The gravitationally lensed quasar Q2237+0305 in X-rays: ROSAT/HRI detection of the "Einstein Cross". Astronomy and astrophysics, 346, .
Chicago-Zitierstil (17. Ausg.)Wambsganß, Joachim. "The Gravitationally Lensed Quasar Q2237+0305 in X-rays: ROSAT/HRI Detection of the "Einstein Cross"." Astronomy and Astrophysics 346 (1999).
MLA-Zitierstil (9. Ausg.)Wambsganß, Joachim. "The Gravitationally Lensed Quasar Q2237+0305 in X-rays: ROSAT/HRI Detection of the "Einstein Cross"." Astronomy and Astrophysics, vol. 346, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.