Crawford, E., Heilbron, J. L., & Ullrich, R. (1987). The Nobel population: 1901-1937 : a census of the nominators and nominees for the prizes in physics and chemistry. Berkeley, CA. : Uppsala: University of California. Office for history and technology, Uppsala university. Office for history of science.

Crawford, Elisabeth, J. L. Heilbron, and Rebecca Ullrich. The Nobel Population: 1901-1937 : A Census of the Nominators and Nominees for the Prizes in Physics and Chemistry. Berkeley, CA. : Uppsala: University of California. Office for history and technology, Uppsala university. Office for history of science, 1987.

Crawford, Elisabeth, J. L. Heilbron, and Rebecca Ullrich. The Nobel Population: 1901-1937 : A Census of the Nominators and Nominees for the Prizes in Physics and Chemistry. Berkeley, CA. : Uppsala: University of California. Office for history and technology, Uppsala university. Office for history of science, 1987.