@article{article,
title = {Les roches a Calpionella Lorenz du Caucase et de la Crimee},
author = {Vassoevitch, N.},
year = {1936},
journal = {Bulletin de la Societe Geologique de France},
volume = {5},
number = {10},
pages = {168-169},
howpublished = "\url{https://eurekamag.com/research/019/316/019316449.php}"
}