Popov, Aleksey Vladimirovich, Irina Borisovna Melnikova, and Alena Nikolaevna Slepchenko. 2019. “The Main Historical Development Stages of Accessible Green Roofs in the Urban Environment”. Amazonia Investiga 8 (23):406-18. https://amazoniainvestiga.info/index.php/amazonia/article/view/885.