For citations:

Tsvetkova G.S., Tsvetkova I.G. Modelling of rational economic proportions of the balance sheet structure of the petrochemical enterprises. Proceedings of the Voronezh State University of Engineering Technologies. 2016;(4):339-344. (In Russ.) https://doi.org/10.20914/2310-1202-2016-4-339-344