[1. Prösch, R., & Daskalaki-Prösch, A. (2011). Technical Handbook for Radio MonitoringVHF/UHF. Books on Demand GmbH, pp. 245-246.]Search in Google Scholar
[2. Skorodumovs, A. (2012). SDPSK Modulator for Radiation Tolerant Satellite Modem. Latv. J. Phys. Techn. Sci., 6 (II), 59-66.]Search in Google Scholar