O-9
Citation:
O-9. E. Obermeyer and S. Majlessi, “A review of recent advances in the application of blank-holder force towards improving the forming limits of sheet metal parts,” Journal of Materials Processing Technology, Volume 75, Issues 1–3, 1 March 1998, Pages 222-234, doi.org/10.1016/S0924-0136(97)00368-3.