1. Norris, K. S., in Evolution and Environment: a symposium on 100th anniversary Peabody Museum Natural History (edit, by Drake, E. T.), 297–324 (Yale University Press, New Haven, 1968).
2. Norris, K. S., in Biochemical and Biophysical Perspectives in Marine Biology, 2 (edit, by Malins, D. C., and Sargent, J. R.), 215–236 (Academic, London, 1975).
3. Bullock, T. H. et al., Z. vergl. Physiol., 59, 117–120 (1968).
4. Norris, K. S., in Marine Bio-acoustics (edit, by lavolga, W. N.), 317–336 (Pergamon, New York, 1964).
5. Schevill, W. E., in Marine Bio-acoustics (edit, by Tavolga, W, N.), 309 (Pergamon, New York, 1964).