Fuel cell city buses : grey shadows of green energyVodovozov, Valery; Raud, Zoja; Petlenkov, Eduard2022 18th Biennial Baltic Electronics Conference (BEC)2022 / 6 l. https://doi.org/10.1109/BEC56180.2022.9935604 Review of energy challenges and horizons of hydrogen city busesVodovozov, Valery; Raud, Zoja; Petlenkov, EduardEnergies2022 / art. 6945 https://doi.org/10.3390/en15196945 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS