1. The biology of some important plankton animals in the fjords of East Greenland;Ussing;Medd. Grønl.,1938
2. Life with tracers;Ussing;Annu. Rev. Physiol.,1980
3. Concentration of the H2 isotope of hydrogen by the fractional electrolysis of water;Washburn;Proc. Natl. Acad. Sci. U. S. A.,1932
4. August & Marie Krogh, Lives in Science;Schmidt-Nielsen,1995
5. Niels Bohr's Times, In Physics, Philosophy, and Policy;Pais,1991