Yefimov, V. B., A. S. Kurekin, A. S. Gavrilenko, D. M. Bychkov, V. N. Tsymbal, V. A. Komyak, S. A. Shilo, A. P. Yevdokimov, V. V. Kryzhanovsky, and Y. D. Saltykov. “Radiophysical Complex for Global Earth Monitoring”. Technology and Design in Electronic Equipment, no. 4, Aug. 2003, pp. 52-53, https://www.tkea.com.ua/index.php/journal/article/view/TKEA2003.4.52.