APA (7th ed.) Citation

Gräter, M., & Wetterich, C. (1994). Kosterlitz-Thouless phase transition in the two dimensional linear sigma model. Arxiv.

Chicago Style (17th ed.) Citation

Gräter, Marcus, and Christof Wetterich. "Kosterlitz-Thouless Phase Transition in the Two Dimensional Linear Sigma Model." Arxiv 1994.

MLA (9th ed.) Citation

Gräter, Marcus, and Christof Wetterich. "Kosterlitz-Thouless Phase Transition in the Two Dimensional Linear Sigma Model." Arxiv, 1994.

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