1. A new loss‐of‐excitation relay for synchronous generators;Mason C.R.;AIEE Trans. III, Power Appar. Syst.,1949
2. Loss-of-Field Protection for Synchronous Machines [includes discussion]
3. A partial survey of relay protection of steam‐driven A‐C generators;Bisbee J.M.;AIEE Trans III, Power Appar. Syst,1962
4. Loss‐of‐field relay operation during system disturbances working group report – June 1971;Mackenzie W.F.;IEEE Trans. Power Appar. Syst.,1975