Fomin, Oleksij, and Alyona Lovska. Concept of Freight Wagons Made of Round Pipes. Edited by Oleksij Fomin. Tallinn, Estonia: Scientific Route OÜ®, 2020. Accessed June 15, 2026. https://monograph.route.ee/rout/catalog/book/978-9916-9516-3-7.