1. and 1957 Proc. 6th Weather Radar Conf., Amer. Met. Soc., Boston, p. 21.
2. Scattering and attenuation by non-spherical atmospheric particles
3. The size distribution of raindrops
4. 1951 Proc. Conf. Water Resources, Illinois State Water Survey, Bull., 41, Urbana, III., p. 293.