APA (7th ed.) Citation

Bartelmann, M. (2010). Gravitational lensing. Arxiv.

Chicago Style (17th ed.) Citation

Bartelmann, Matthias. "Gravitational Lensing." Arxiv 2010.

MLA (9th ed.) Citation

Bartelmann, Matthias. "Gravitational Lensing." Arxiv, 2010.

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