Bondarev, O. M., D. O. Yagoda, O. O. Bondarev, and V. M. Skoblenko. “Theoretical and Experimental Evaluation of Strength Indices for Traction Reduction-Gear Housings of Welded Construction KEVRZ for Electric Trains ER2, ER9”. Science and Transport Progress, no. 4(46), Aug. 2013, pp. 99-110, doi:10.15802/stp2013/16599.