1. A historical account of the technical means used in cryotherapy;Squazzi;Minerva Med,1974
2. Hippocrates. Greek medicine, translated by AJ Brock. London: Dent; 1929
3. Memoires de chirurgie militaire et campagnes;Lorrey,1832
4. On the treatment of cancers by regulated application of an anaesthetic temperature;Arnott,1855
5. Liquid air in medicine and surgery;White;Med Rec,1899