Analysis and design of ultracapacitor-boosted back-up power supply for tramcars [Electronic resource]Hõimoja, Hardi; Vinnikov, Dmitri; Jalakas, TanelEUROCON 2009 : International IEEE Conference devoted to the 150-anniversary of Alexander S.Popov : May 18-23, 2009 Saint Petersburg, Russia2009 / p. 598-604 [CD-ROM] https://ieeexplore.ieee.org/document/5167691

Distance control of electric drives and power converters via internet : concept of e-laboratory [Electronic resource]Vodovozov, Valery; Raud, ZojaEUROCON 2009 : International IEEE Conference devoted to the 150-anniversary of Alexander S.Popov : May 18-23, 2009 Saint Petersburg, Russia2009 / p. 804-809 [CD-ROM]