Design concepts for a hybrid diesel electric shunting locomotive powertrainHõimoja, Hardi; Roasto, Indrek; Kesküla, A.BEC 2010 : 2010 12th Biennial Baltic Electronics Conference : proceedings of the 12th Biennial Baltic Electronics Conference : Tallinn University of Technology, October 4-6, 2010, Tallinn, Estonia2010 / p. 293-296 : ill