REFERENCES
- DEININGEJI , R. L. , 1960 , Human factors engineering studies of the design and use of pushbutton tolophono sots . Bell System Technical Journal , 39 , 995 – 1012 .
- GARNER , W. R. , 1951 , The accuracy of counting repeated short tones . J. exp. Psychology , 41 , 310 – 316 .
- QUASTLER, H.., and WULFF , V. J. , 1955 , Human performance in information transmission, Parts I and II . Control Systems Laboratory Report No. 62 .
- TAUBMAN , R. E. , 1951 , Studios in judged number I—The judgement of auditory number . J. gen. Psychology , 43 , 167 – 194 .
- Now at Union College, Barbourville, Kentucky, U.S.A