Дудкин (Dudkin)Д. (Denis) В. (Vladimirovich and Федяева (Fedyaeva)И. (Irina) М. (Mikhailovna), “LOW-WASTE TECHNOLOGY OF PRODUCING HUMIC SUBSTANCES FROM PEAT OF DIFFERENT BOTANICAL COMPOSITION AND DECOMPOSITION DEGREE”, JCPRM, no. 2, pp. 175-182, Dec. 2017.