Valery Tsaplev, Sergey Konovalov, Roman Konovalov and Sergey Nikolaev (2020) “IMPREGNATION OF POROUS CONSTRUCTIONS AND NATURAL MATERIALS USING ULTRASOUND”, GEOMATE Journal, 18(69), pp. 104–110. Available at: https://geomatejournal.com/geomate/article/view/1515 (Accessed: 3 May 2024).