1. Tucker, D.G.: Modulators and frequency changers, (Macdonald
2. Rissik, H.: The fundamental theory of a.c. converters, (Chapman & Hall 1939)
3. Ford, J.S.: ‘The application of communication techniques to power frequency changers’, 1972, Ph.D. thesis, University of Bristol
4. Pelly, B.R.: Phase-controlled converters and cycloconverters, (Wiley-Interscience 1972)