Environmental audit on the way of solving environmental problems in the oil and gas sector. Вестник КазНУ. Серия Экономическая, [S. l.], v. 113, n. 1/2, 2016. Disponível em: https://be.kaznu.kz/index.php/math/article/view/1618. Acesso em: 20 июл. 2026.