Toxic action of substances from male fern Dryopteris filix-mas (L.) Schott (1834) on free-living soil nematode Caenorhabditis elegans Maupas (1900)Anastasia Egorova, Alsu Gatiyatullina, Dmitriy Terenzhev, Timur Belov and Tatiana KalinnikovaE3S Web Conf., 254 (2021) 09011DOI: https://doi.org/10.1051/e3sconf/202125409011