Modernisation issues of diesel-electric shunting locomotive power unitsHõimoja, Hardi; Jalakas, Tanel; Rosin, Argo; Rassõlkin, AntonScientific journal of Riga Technical University. Serija 4, Power and electrical engineering2010 / p. 57-62 : illhttps://ui.adsabs.harvard.edu/abs/2010SJRUP..26...58H/abstract