Robert Efron


, 1972, The measurement of perceptual durations, in J. T. Fraser, F. C. Haber & G. H. Müller (eds.), The study of time, Dordrecht, Springer, pp. 207-218.

, 1969a, What is perception?, in R. S. Cohen & M. W. Wartofsky (eds.), Proceedings of the Boston colloquium for the philosophy of science 1966/1968, Dordrecht, Springer, pp. 137-173.