APA (7th ed.) Citation

Freire, F., Litim, D. F., & Pawlowski, J. M. (2001). Gauge invariance, background fields and modified Ward identities. Arxiv.

Chicago Style (17th ed.) Citation

Freire, Filipe, Daniel F. Litim, and Jan M. Pawlowski. "Gauge Invariance, Background Fields and Modified Ward Identities." Arxiv 2001.

MLA (9th ed.) Citation

Freire, Filipe, et al. "Gauge Invariance, Background Fields and Modified Ward Identities." Arxiv, 2001.