朝鲜铁路客票发售和预订系统总体结构的设计与探讨

金永日;钟雁

Design and discussion of overall structure for railway ticketing and reservation system on the DPRK

JIN Yongri;ZHONG Yan

北京交通大学学报 . 2014, (3): 38 . DOI: 10.11860/j.issn.1673-0291.2014.03.007