Письменный, Е.Н., А.М. Терех, А.В. Семеняко, В.А. Рогачев, and В.Д. Бурлей. “Thermal Efficiency of in-Line Beams Cross-Section-Ribbed Pipes of the Various Profile”. Eastern-European Journal of Enterprise Technologies 2, no. 7(44) (April 6, 2010): 4–8. Accessed July 18, 2024. https://journals.uran.ua/eejet/article/view/2691.