1. Gränicher, H., P. Jona, Helv.Phys.Acta Suppl.V 50–60 (1960), where a complete list of references to the early Zürich work may be found
2. Bjerrum, N., Kgl.Danske Videnskab.Selskab. Mt.-fys.Medd. 27, No. 1, 56p (1951)
3. Onsager, L., M. Dupuis, in “Electrolytes”, p.27–46, Pergamon Press (1962). Runnels, L.K., Scientific American, 118–126, Dec. (1966)
4. Gränicher, H., Physik kondens. Materie 1, 1 (1963);
5. Gränicher, H. Z.Kristallogr. 110, 432–471 (1958)