T. Okuyama, H. Nagase, Y. Kubota, H. Horiuchi, K. Miyazaki, S. Ibori, “High Performance AC Motor Speed Control System Using GTO Converter”, IPEC-Tokyo ’83, Conference Record, pp. 720-731, 1983.
K.Nagata, T.Okuyama, H. Nemoto, T.Katayama,” A Simple Robust Voltage Control of High Power Sensorless Induction Motor Drives With High Start Torque Demand”, IEEE Trans. on IA, Vo. 44, Issue 2, 2008.