Korea Railroad Research Institute, Uiwang-city, Kyonggi-Do, 437-050 KOREA;
Korea Railroad Research Institute, Uiwang-city, Kyonggi-Do, 437-050 KOREA;
Korea Railroad Research Institute, Uiwang-city, Kyonggi-Do, 437-050 KOREA;
Korea Railroad Research Institute, Uiwang-city, Kyonggi-Do, 437-050 KOREA;