Sedelnikova, L. L., and O. L. Tsandekova. “THE SPECIFIC CONTENT AND ASH CONTENT OF SOME BIOGENIC ELEMENTS (N, S, P) IN LEAVES OF HER-BACEOUS PLANTS IN THE CITY OF ISKITIM OF THE NOVOSIBIRSK REGION”. Chemistry of Plant Raw Material, no. 1, Mar. 2021, pp. 213-8, doi:10.14258/jcprm.2021018413.