Belyaev, A. I., A. A. Tubalov, A. V. Koshelev, A. M. Belyakov, and S. D. Fomin. “Investigation and Assessment of Soil Fertility in Agroforest Landscapes”. KnE Life Sciences, Vol. 4, no. 14, Nov. 2019, pp. 263–271, doi:10.18502/kls.v4i14.5612.