1. Radio and electronic laboratory handbook;Scroggie,1971
2. The capacity and phase difference of paraffined paper condensers as functions of temperature and frequency
3. Electronic engineer’s reference book,1967
4. Air-cored inductors for audio;Thiele;J Audio Eng Soc,1976
5. Description and analysis of a new 50-watt amplifier circuit;McIntosh;Audio Eng,1949