中国科学院数学与系统科学研究院期刊网
Optimal investment strategy for cyber security management of small and medium-sized enterprises based on the heterogeneous perspective
WANG Ren, XU Hao, WANG Zhongjie, XU Xu
Systems Engineering - Theory & Practice . 2023, (2): 398 -420 .  DOI: 10.12011/SETP2022-1001