Abroskin, V.N., and M.G. Redkina. “EUROPEUS VLADIMIR IVANOVICH (1866-1931), the Former Vice-Governor of the Perm Region (guberniya): A Newfound Face”. Perm Federal Research Centre Journal, no. 3, July 2021, pp. 63-79, https://doi.org/10.7242/2658-705X/2021.3.8.