Jalal, Ahmed Q., Hussein A. Essa Allalaq, Alexey I. Shinkevich, Svetlana S. Kudryavtseva, and Irina G. Ershova. 2019. “Assessment of the Efficiency of Energy and Resource-Saving Technologies in Open Innovation and Production Systems”. International Journal of Energy Economics and Policy 9 (5):289-96. https://econjournals.com/index.php/ijeep/article/view/8253.