The situation in the NSC «Naftogaz Ukrainy» is difficult, but not critical
Diyak, I. V. (2009). The situation in the NSC «Naftogaz Ukrainy» is difficult, but not critical. Economic Annals-XXI, 11-12, 25-26. https://ea21journal.world/index.php/ea-v105-08/
Situation and reasons of Ukrainian gas sector non-profitableness
Soskin, O. I. (2009). Situation and reasons of Ukrainian gas sector non-profitableness. Economic Annals-XXI, 11-12, 23-25. https://ea21journal.world/index.php/ea-v105-07/