1. Hunt, F. V., 1954, Electroacoustics, John Wiley.
2. Olson, H. F., 1957, Acoustical Engineering, Van Nostrand.
3. 1998, Commemorative issue: 50 years of contributions to audio engineering’, J. Audio Eng. Soc. 46(1/2).
4. Vanderkooy, J., Boers, P. M. and Aarts, R. M., 2003, Direct-radiator loud-speaker systems with high Bl, J. Audio Eng. Soc., 51(7/8), 625-634.
5. Aarts, R. M., 2005, High-efficiency low-B1 loudspeakers, J. Audio Eng. Soc., 53(7),579-592.