Sessler, G. M.; West, J. E. (1962). "Self-biased condenser microphone with high capacitance". Journal of the Acoustical Society of America. 34 (11): 1787–1788. Bibcode:1962ASAJ...34.1787S. doi:10.1121/1.1909130.
Ning Xiang and Gerhard M. Sessler: Acoustics, Information, and Communication – Memorial Volume in Honor of Manfred R. SchroederXiang, Ning; Sessler, Gerhard M, eds. (2015). "Acoustics, Information, and Communication". Acoustics, Information, and Communication – Memorial Volume in Honor of Manfred R. Schroeder, Springer 2014. doi:10.1007/978-3-319-05660-9. ISBN978-3-319-05659-3.
Sessler, G. M.; West, J. E. (1962). "Self-biased condenser microphone with high capacitance". Journal of the Acoustical Society of America. 34 (11): 1787–1788. Bibcode:1962ASAJ...34.1787S. doi:10.1121/1.1909130.