1. Talas, P., Toom, P.: Dynamic measurement and analysis of air-gap variations in large hydroelectric generators. IEEE Transactions on Power Apparatus and Systems 9, 102 (1983)
2. Frosini, L., Pennacchi, P.: Detection and Modelling of Rotor Eccentricity in Electric Machines—an Overview. IMechE Event Publications 2 (2004)
3. Lundström, N.L.P., Aidanpää, J.-O.: Dynamic consequences of electromagnetic pull due to deviations in generator shape. Journal of Sound and Vibration 1–2, 301 (2007).
4. Lundström, N.L.P., Aidanpää, J.-O.: Whirling frequencies and amplitudes due to deviations of generator shape. International Journal of Non-Linear Mechanics 43, 9 (2008)
5. Wang, Y., Sun, G., Huang, L.: Magnetic Field-induced Nonlinear Vibration of an Unbalanced Rotor. In: Proceedings of ASME Design Engineering Division 2, (2003)