Chung, L.C.L.C.ChungCheng, J.-H.J.-H.ChengJUNG-HO CHENG2018-09-102018-09-102002http://www.scopus.com/inward/record.url?eid=2-s2.0-0036680347&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/297247Fracture criterion and forming pressure design for superplastic bulgingjournal article10.1016/S0921-5093(01)01818-4