Perminov, Andrey, Yury Zhuravlev, Yury Lukyanov, Sergey Tikhonov, and Alexander Ilyin. 2019. “DETERMINATION OF CHAMBER AND PISTON GEOMETRY FOR A ROTARY TYPE EXPANSION MACHINE”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June): 197-200. https://doi.org/10.17770/etr2019vol3.4060.