1. Gyugyi, L., and Pelly, B.R.: Static power frequency changers-Theory, performance and application, (John Wiley & Sons, New York 1976)
2. Forster, M.K., and Boys, J.T.: Applications of new high power electric convertors, (to be published) (only when paper has been accepted)
3. Pelly, B.R.: Thyristor phase-controlled converters and cyclo-converters – Operation, control and performance, (Wiley & Sons, New York 1971)