Discussion of "Comparative studies of prefiring NGH scheme and phase imbalance scheme on stabilizing torsional oscillations" [and reply]

The original paper ("Comparative studies of prefiring NGH scheme and phase imbalance scheme on stabilizing torsional oscillations" by Wang, see ibid., vol.15, no.1, p.307-12, 2000) is discussed by the authors. The original author's reply is also included.