Gudzenko, O.V., et al. “Modification of Bacillus Sp. IMV B-7883 Elastase Activity by the Hetero-Metallic Carboxylatogermanates Stannates”. Mikrobiolohichnyi Zhurnal, vol. 86, no. 4, Sept. 2024, pp. 33-40, https://doi.org/10.15407/microbiolj86.04.033.