Margiev E.A., Kortiev L.I., Kortiev A.L., Dryaev A.A, and Kulumbegov R.P. 2019. “Open Geotechnology in the Development of Non-Metallic Mineral Resources During Road Construction”. Opción 35 (December), 1598-1608. http://www.produccioncientificaluz.org/index.php/opcion/article/view/30765.