Aeglased modemid ja RS-liides : laboratoorse töö juhendRaja, Aimur; Ots, Avo2001 https://www.ester.ee/record=b1677910*est RS-liides ja aeglased modemid : laboratoorse töö juhend1999 https://www.ester.ee/record=b1317742*est SNR estimation in HF communications channelRuuben, Toomas; Meister, Mari-Anne; Lossmann, Eerik; Berdnikova, Julia; Madar, Urve6th European Conference on Antennas and Propagation (EUCAP)2012 / p. 2013-2015 : ill https://ieeexplore.ieee.org/document/6205874 Using an external antenna to reduce exposure to electromagnetic fields from wireless modems in motor-cars [Electronic resource]Ahonen, Mikko; Koppel, TarmoSCEE 2014 : Scientific Conference on Economics and Entrepreneurship : 55th International Riga Technical University conference : Latvia, Riga, 14-17 October2014 / [CD-ROM]