LENKOVA, O. V.; PERMYAKOV, A. S.; YAKUNINA, O. G.; VECHKASOVA, M. V. Problems and Prospects of Innovative Development of Petrochemical Enterprises. International Journal of Energy Economics and Policy, [S. l.], v. 7, n. 3, p. 321–325, 2017. Disponível em: https://econjournals.com/index.php/ijeep/article/view/5115. Acesso em: 4 oct. 2022.