1. E. V. Balashov and E. Ya. Rizhiya, “The effect of biochar on the bulk density and water-holding capacity of sandy loam soddy-podzolic soil of varying degrees of cultivation,” Agrofizika, No. 2, 1–6 (2020). https://doi.org/10.25695/AGRPH.2020.02.01
2. I. A. Dubrovina, M. G. Yurkevich, and V. A. Sidorova, “The effect of biochar and fertilizers on the development of barley plants and agrochemical parameters of sod-podzolic soils in a growing season,” Tr. Karel. Nauchn. Tsentra Ross. Akad. Nauk, No. 3, 31–44 (2020). https://doi.org/10.17076/EB1087
3. B. R. Grigor’yan, A. N. Grachev, V. I. Kulagina, L. M. Sungatullina, T. G. Kol’tsova, and S. S. Ryazanov, “The effect of biochar on plant growth, microbiological and physicochemical parameters of low-humus soil under growing season conditions,” Vestn. Kazan. Tekhnol. Univ., No. 11, 185–189 (2016).
4. V. B. Il’in, Heavy Metals in the Soil–Plant System (Nauka, Novosibirsk, 1991) [in Russian].
5. Methods for Determination of Heavy Metals in Diluted Wastewater (Kolos, Moscow, 1989) [in Russian].