Kletska, T. S. “The Founders of the Kyiv Physical-Mathematical Society: Mikhailo Petrovich Avenarius (1835–1895)”. History of Science and Technology, Vol. 8, no. 1(12), June 2018, pp. 23-30, doi:10.32703/2415-7422-2018-8-1(12)-23-30.