Longjiang Niu, Yongwan Zhang, Leiyu Zhang, Qingliang Zhang, Weiping Luo, Jingyu Wang, Donghang Liu, Babak Ziaie, Xavier Velay. "Study on fold formation mechanism and process optimization in multi-directional die forged valve bodies." PLoS ONE, 2025. doi:10.1371/journal.pone.0337844