Fedosova, R., A. Lisovsky, A. Yussuf, S. Panova, and G. Zlotnikova. “Assessment of the Financial Stability of Russian Printing Companies: Business Services Sector#”. Journal of Reviews on Global Economics, vol. 7, Nov. 2018, pp. 716-20, https://www.lifescienceglobal.com/pms/index.php/jrge/article/view/5737.