https://www.vedomosti.ru/library/news/2008/12/02/opek-predlagaet-rf-vstupit-v-kartel-ili-sokratit-dobychu-nefti?utm_source=telegram&utm_campaign=share&utm_medium=social&utm_content=opek-predlagaet-rf-vstupit-v-kartel-ili-sokratit-dobychu-nefti