SIRBU, Olesea, et al. “THE ROLE OF EU INNOVATION POLICIES IN THE SUSTAINABLE DEVELOPMENT OF THE ENERGY SECTOR”. Studia Universitatis Babeș-Bolyai Oeconomica, vol. 62, no. 2, Aug. 2017, pp. 3-19, https://studia.reviste.ubbcluj.ro/index.php/subboeconomica/article/view/2662.