- Biological Cybernetics 3(3):136-143 (1966)
- Biological Cybernetics 3(6):267-272 (1967)
- Springer, Berlin, (1998)
- Speech Communication 2(1):65-66 (1983)
- The Journal of the Acoustical Society of America 68(5):1523--1525 (November 1980)
- Elektronische Rechenanlagen 20(4):178-186 (1978)


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