LIDIN, Konstantin. M. G. Meerovich. From Unpublished Works. project baikal, Russian Federation, n. 60, p. 25-26, june 2019. ISSN 2309-3072. Available at: <http://www.projectbaikal.com/index.php/pb/article/view/1469>. Date accessed: 06 dec. 2019.