Butenko, V. K., V. G. Yurev, Yu. G. Dobrovolskiy, and B. G. Shabashkevich. 2006. “Ultraviolet Radiation Radiometer ‘Tenzor-31’”. Technology and Design in Electronic Equipment, no. 6 (February), 36-38. https://www.tkea.com.ua/index.php/journal/article/view/TKEA2006.6.36.