Afanasov, A.M., Drubetskiy, A.Y., Arpul, S.V. and Khvorostyankina, A.P. 2014. Energy efficiency determination of loading-back system of electric traction machines. Science and Transport Progress . 2(50) (Apr. 2014), 67–73. DOI:https://doi.org/10.15802/stp2014/23747.