APA (7th ed.) Citation

Eigenbrod, A., Schmidt, R. W., & Wambsganß, J. (2008). Microlensing variability in the gravitationally lensed quasar QSO 2237+0305 = the Einstein cross: II. Energy profile of the accretion disk. Astronomy and astrophysics, 490(?), . https://doi.org/10.1088/0004-6361:200810729

Chicago Style (17th ed.) Citation

Eigenbrod, Alexander, Robert W. Schmidt, and Joachim Wambsganß. "Microlensing Variability in the Gravitationally Lensed Quasar QSO 2237+0305 = the Einstein Cross: II. Energy Profile of the Accretion Disk." Astronomy and Astrophysics 490, no. ? (2008). https://doi.org/10.1088/0004-6361:200810729.

MLA (9th ed.) Citation

Eigenbrod, Alexander, et al. "Microlensing Variability in the Gravitationally Lensed Quasar QSO 2237+0305 = the Einstein Cross: II. Energy Profile of the Accretion Disk." Astronomy and Astrophysics, vol. 490, no. ?, 2008, https://doi.org/10.1088/0004-6361:200810729.