@inproceedings{Petrov:2017lm, author = "Petrov, Igor and Knurenko, Stanislav", title = "{Comparison of the relative transparency of the atmosphere measured by attenuation of Cherenkov light}", doi = "10.22323/1.301.0333", booktitle = "Proceedings of 35th International Cosmic Ray Conference {\textemdash} PoS(ICRC2017)", year = 2017, volume = "301", pages = "333" }