1. and 1951 The mechanical properties of the ear. Ch. 27 of Handbook of Exp. Psychology (ed.). New York, Wiley.
2. 1952 Quantitative studies of echolocation in bats (Myotis l. lucifugus); studies of vision in bats (Myotis l. lucifugus and Eptesicus f. fuscus); and quantitative studies of vision of owls (Tyto alba pratincola). Thesis deposited in library of Cornell University, Ithaca, New York.
3. Die Sinneswelt der Fledermäuse
4. Sound Scattering by Solid Cylinders and Spheres