Турпак, С. М., Г. О. Лебідь, and О. О. Падченко. “Efficiency Increase of Interaction Technology of City and Suburban Railway Passenger Transport”. Eastern-European Journal of Enterprise Technologies, vol. 1, no. 4(49), Jan. 2012, pp. 13-15, doi:10.15587/1729-4061.2011.1905.