8Hua Lin, Mei Xuesong, Wu Xutang. Vibration and Control in Ring Rolling Process. Transactions of Nonferrous Metals Society of China (English Edition), 1999,9(2):213-217.
9Hulshorst T,Wiegels H, Bohmer C,et al. Improved Process Stability in Ring Rolling by Adaptive Control and Design Measures. Stahl und Eisen, 2002,122(8) :43-49.
10Koppers U, Kopp R. Geometry of the Forming Zones in Ring Rolling. Steel Research, 1992, 63(2) :74-77.
