Zhelnova К. В., & Osipov А. К. (2011). Cluster Approach to the Management of Catering on the Municipal Level (by Example of Votkinsk). Vestnik IzhGTU Imeni M.T. Kalashnikova, (4), 87–92. Retrieved from https://izdat.istu.ru/index.php/vestnik/article/view/2616