Rashitovich Safiullin, Marat, y Leonid Alekseevich Elshin. «Modeling of Purchasing Managers. Index of the Region and Assessment of Its Influence on Development Parameters of Industrial Sectors of Economy (Example of Volga Federal District Regions.». Revista Publicando 4, no. 13 (3) (diciembre 12, 2017): 366-378. Accedido julio 3, 2024. https://revistapublicando.org/revista/index.php/crv/article/view/856.