1 |
Yoo-Sun Ji, Si-young Park, Kyung-sup Kim(2015), Improvement of free-riding on the urban railway(Focusing on the Seoul Metro), Korea Society for Railway, pp.738-743
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2 |
Chang-Hoon Lee, Sung-bong Chung, Si-Gon Kim(2015), Free-ride Improvement system using a transportation card data, Korea Society for Railway, 2015.5 pp978-981
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3 |
KORAIL(2013), Railway passenger transport terms
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4 |
Price Watger House Coopers(2007), Translink Fare Evasion Internal Audit
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5 |
Korean Network(2012), Internet Newspaper
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6 |
Radio Korea(2013), Internet Newspaper
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7 |
Rail Industrial Information Center, http://www.kric.or.kr
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8 |
http://www.radiokorea.com/news/print.php?uid=117235
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