[1]
Жданов, Т.К. and Мельгунов, М.С. 2017. Emanation characteristics of the «sooty» coal with high natural radioactive elements concentration. Proceedings of Voronezh State University. Series: Geology. 1 (Sep. 2017), 25-31. DOI:https://doi.org/10.17308/geology.2018.1/1418.