1. CRREL – U.S. Army Cold Regions Research and Engineering Laboratory, Hanover, New Hampshire.
2. IAHS 104 – International Association of Hydrological Sciences, Publication 104. (Similarly for other numbers.)
3. IASH 86 – International Association of Scientific Hydrology, Publication 86. (Similarly for other numbers.) (IASH is the former name of IAHS.)
4. Handbook of Mathematical Functions;Abramowitz,1965
5. Contribution to the physics of glaciers;Ahlmann;Geogr. J.,1935