Yusupov, Kasim Nazifovich, Konstantin Evgenyevich Grishin, Venera Maratovna Timiryanova, y Dina Khadimovna Krasnoselskaya. «Spatial Patterns of Profitable firms' Location: Empirical Evidence from Russia». Amazonia Investiga 8, no. 24 (noviembre 21, 2019): 452–463. Accedido enero 19, 2026. https://amazoniainvestiga.info/index.php/amazonia/article/view/1004.