For citations:

Kalinina T.A., Chaikovsky I.I. Isotope composition (5¹³C, S¹⁸O) of Lower Permian carbonates of Permian Pre-Kama and products of its hypergenic alteration. Proceedings of higher educational establishments. Geology and Exploration. 2015;(5):14-25. (In Russ.) https://doi.org/10.32454/0016-7762-2015-5-14-25