Control of contamination of agricultural machinery motor oil pollution by optoelectronic methodNatalia Kochkovaya, Vladimir Semenov, Yuriy Asstaturov, Yuriy Khanzhonkov and Irina UsovaE3S Web Conf., 175 (2020) 05009DOI: https://doi.org/10.1051/e3sconf/202017505009