APA (7th ed.) Citation

Abdalla, H., Jankowsky, F., Quirrenbach, A., Schwemmer, S., & Wagner, S. (2017). Characterizing the γ-ray long-term variability of PKS 2155−304 with H.E.S.S. and Fermi-LAT. Astronomy and astrophysics, 598, . https://doi.org/10.1051/0004-6361/201629419

Chicago Style (17th ed.) Citation

Abdalla, Hassan, Felix Jankowsky, Andreas Quirrenbach, Stephanie Schwemmer, and Stefan Wagner. "Characterizing the γ-ray Long-term Variability of PKS 2155−304 with H.E.S.S. and Fermi-LAT." Astronomy and Astrophysics 598 (2017). https://doi.org/10.1051/0004-6361/201629419.

MLA (9th ed.) Citation

Abdalla, Hassan, et al. "Characterizing the γ-ray Long-term Variability of PKS 2155−304 with H.E.S.S. and Fermi-LAT." Astronomy and Astrophysics, vol. 598, 2017, https://doi.org/10.1051/0004-6361/201629419.

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