Perepravo, N., V. Zolotarev, A. Ševcov, J. Ahlamov, S. Otroško, N. Šarikov, V. Kosolapov, A. Marczuk, and J. Caban. “Improvement of Harvesting Methods of Perennial Seed Grass”. Agricultural Engineering , Vol. 20, no. 4, Feb. 2017, pp. 167-73, doi:10.1515/agriceng-2016-0074.