The study of forming a roll of pressed hay and the influence of its density on quality parametersVyacheslav Terentyev, Konstantin Andreev, Nikolay Anikin, Nikolay Novikov, Vladimir Teterin, Dmitry Blagov and Sergey MitrofanovE3S Web Conf., 203 (2020) 04013DOI: https://doi.org/10.1051/e3sconf/202020304013