[1] Xiang Li, Credibilistic Programming，Springer，2013

      It provides fuzzy programming approach to solve real-life decision problems in fuzzy environment. Within the framework of credibility theory, it provides a self-contained, comprehensive and up-to-date presentation of fuzzy programming models, algorithms and applications in portfolio analysis.

[2] Xiang Li, Xin Yang, Subway Energy-Efficient Management，Springer，2020

      This book provides a comprehensive presentation on energy-efficient management in urban rail transit system via operations research and uncertain optimization methods. It is suitable for researchers, engineers, and students in the fields of transport management. The readers will learn numerous new modeling ideas on reducing tractive energy consumption and improving regenerative energy utilization, and find this work a useful reference.