- Reducing exposure to radiofrequency electromagnetic fields from wireless networking with laptop computers [Electronic resource]Koppel, Tarmo; Ahonen, Mikko; Vilcane, IneseSCEE 2014 : Scientific Conference on Economics and Entrepreneurship : 55th International Riga Technical University conference : Latvia, Riga, 14-17 October2014 / [2] p. [CD-ROM]