Тарасенко, М. Г., and К. М. Козак. “MAXIMUM POSSIBLE LUMINOUS EFFICACY OF LIGHT SOURCES”. Lighting Engineering & Power Engineering, no. 3 (July 7, 2017): 8–13. Accessed April 27, 2025. https://lepe.kname.edu.ua/index.php/lepe/article/view/358.