Kozhemyako, V. P., Y. O. Khodiakov, and O. O. Kuzin. “МODERN ENERGY SAVING LIGHTING DEVICES ARE BASED ON OPTICAL TRANSMISSION SYSTEMS OF SOLAR RADIATION AT A DISTANCE OVER FIBER OPTIC CABLE (FOC)”. Optoelectronic Information-Power Technologies, vol. 31, no. 1, Apr. 2017, pp. 74-81, https://oeipt.vntu.edu.ua/index.php/oeipt/article/view/442.