@article{Chakraborty:20165x, author = "Chakraborty, Nachiketa and Cologna, Gabriele", title = "{Rapid variability at very high energies in Mrk 501 }", doi = "10.22323/1.236.0872", journal = "PoS", year = 2016, volume = "ICRC2015", pages = "872" }