1. Rhythmic Functions in the Living System;Annals of the New York Academy of Sciences,1962
2. Wettervorgänge und ihr Einfluss auf das vegatative Nervensystem;Becker;Berichte der physikal-med., Gesellchaft Zu Würzburg,1954
3. Relation between natural magnetic field intensity and the increase of psychiatric disturbances in the human population;Becker,1961
4. Seasonal variations in the incidence of severely crippling mental disorders;Bradley;Amer. J. Psychiat.,1958
5. Living clocks;Brown;Science,1959