Поляков, Н. Ф., М. А. Завыленков, and И. П. Павлов. “Trends of Small Business Development in Nizhny Novgorod Region: Facts, Assessments, Proposals”. Modern Economics: Problems and Solutions, Vol. 10, Apr. 2015, pp. 132-43, https://journals.vsu.ru/meps/article/view/5207.