New controlled quantum key agreement protocols based on  Bell states
He Yefeng, Yue Yuru, Li Guoqing, Liu Jixiang, Di Man, Pang Yibo
The Journal of China Universities of Posts and Telecommunications . 2022, (4): 42 -50 .  DOI: 10.19682/j.cnki.1005-8885.2022.2018