For citations:

Shmeleva L.A. The Upper Ordovician reef Bol’shaya Kos’yu, Ilych River, the Northern Urals (structure, paleobiocenosis, microfacies, model of formation). LITHOSPHERE (Russia). 2020;20(4):557-572. (In Russ.) https://doi.org/10.24930/1681-9004-2020-20-4-557-572