Coppi, P. S., Aharonian, F. A., & Völk, H. J. (2008). On the observability of VHE cascade radiation from extragalactic sources. The second Compton symposium.
Chicago Style (17th ed.) CitationCoppi, Paolo S., Felix A. Aharonian, and Heinrich J. Völk. "On the Observability of VHE Cascade Radiation from Extragalactic Sources." The Second Compton Symposium 2008.
MLA (9th ed.) CitationCoppi, Paolo S., et al. "On the Observability of VHE Cascade Radiation from Extragalactic Sources." The Second Compton Symposium, 2008.
Warning: These citations may not always be 100% accurate.