Zhang Xintian, and Jennifer Fronda. “Opportunities and Challenges in the Transition to Clean Energy of Heilongjiang Energy Sales Company: Basis for Strategic Plan”. The QUEST: Journal of Multidisciplinary Research and Development 3, no. 2 (September 28, 2024). Accessed November 21, 2024. https://neust.journalintellect.com/quest/article/view/149.