Research of reliability of urban electric transport systemA.E. Auhadeev, R.S. Litvinenko, V.P. Fandeev, P.P. Pavlov, V.M. Butakov and A.R. LitvinenkoE3S Web Conf., 124 (2019) 05078DOI: https://doi.org/10.1051/e3sconf/201912405078