Kalmykova, A. L., A. V. Tereshkin, G. N. Zaigralova, D. V. Eskov, and M. Y. Kornienko. “Analysis of the Range of Trees and Shrubs Used in the Landscaping of Saratov”. Amazonia Investiga, vol. 8, no. 22, Sept. 2019, pp. 510-21, https://amazoniainvestiga.info/index.php/amazonia/article/view/792.