Research Article
Competitive Analysis of Two Special Bahncard Replacement Problem
College of Economics and Management, Shandong University of Science and Technology, Shandong 266510, China
Xinmin Liu
College of Economics and Management, Shandong University of Science and Technology, Shandong 266510, China
Wanglin Kang
College of Economics and Management, Shandong University of Science and Technology, Shandong 266510, China