K. M. Na, Y. Park, Y. H. Cho, S. Y. Kwon, K. Lee, W. You, 2017, Analysis of Current
                           Collect Performance Depending on Installation Condition of Overhead Contact Line in
                           Suseo High Speed Line, The Transactions of the Korean Institute of Electrical Engineers,
                           Vol. 66, No. 4, pp. 727-732
