Analysis of implementation possibilities and benefits of three-level half-bridge NPC topology in static auxiliary converters for rolling stock [Electronic resource]Vinnikov, Dmitri; Jalakas, Tanel; Roasto, IndrekPOWERENG 2009 : 2nd International Conference on Power Engineering, Energy and Electrical Drives : 18-20 March, 2009, Lisbon, Portugal2009 / p. 587-592 : ill. [CD-ROM] https://ieeexplore.ieee.org/document/4915180 Analysis of state of the art and development trends in soft-switched half-bridge DC/DC convertersEgorov, Mikhail; Vinnikov, Dmitri; Vodovozov, Valery6th International Symposium "Topical Problems in the Field of Electrical and Power Engineering" : Doctoral School of Energy and Geotechnology : [Kuressaare, January 12-17, 2009]2009 / p. 49-54 : ill Autode ZIL-130 käigukastide ja vedavate sildade töökindluse uuriminePruusapuu, J.; Mäekask, JaanXXIX vabariiklik üliõpilaste teaduslik- tehniline konverents 30. märtsist - 1. aprillini 1977 : ettekannete teesid1977 / lk. 87 https://www.ester.ee/record=b2449987*est