ПОВЄРЄННИЙ, С. Ф.; ЛУР’Є, А. Й. On the question of creation of secondary porousity in large-depth sediments of the south-east of the Dneprovsk-Donetsk depression. Visnyk of V. N. Karazin Kharkiv National University. Series Geology. Geography. Ecology, n. 53, p. 45-60, 3 Dec. 2020.