Influence of electric railway system on voltage unbalance distribution between high voltage and low voltage electrical networksSarnet, Tanel; Kilter, Jako; Palu, IvoElectrical and control technologies : proceedings of the 8th International Conference on Electrical and Control Technologies ECT-2013 : Kaunas, Lithuania, 2-3 May 20132013 / p. 168-171 https://www.researchgate.net/publication/290247556_Influence_of_electric_railway_system_on_voltage_unbalance_distribution_between_high_voltage_and_low_voltage_electrical_networks