APA (7th ed.) Citation

Alexandrov, A., Koval, S., & Zhdanov, V. (2012). Gravitational lens equation: Critical solutions and magnification near folds and cusps. Advances in Astronomy and Space Physics.

Chicago Style (17th ed.) Citation

Alexandrov, A.N, S.M Koval, and V.I Zhdanov. "Gravitational Lens Equation: Critical Solutions and Magnification Near Folds and Cusps." Advances in Astronomy and Space Physics 2012.

MLA (8th ed.) Citation

Alexandrov, A.N, et al. "Gravitational Lens Equation: Critical Solutions and Magnification Near Folds and Cusps." Advances in Astronomy and Space Physics, 2012.

Warning: These citations may not always be 100% accurate.