1. Anatomy of the Eye and Orbit;Wolff, E.,1976
2. Pathology of injury of nerve induced by cold;Denny-Brown, D.; Adams, R.D.; Brenner, C.; Doherty, M.M.;J Neuropathol Exp Neurol,1945
3. Cryoanalgesia, a new approach to pain relief;Lloyd, J.W.; Barnard, J.D.W.; Glynn, C.J.;Lancet,1976
4. Experience in clinical examination of corneal sensitivity;Boberg-Ans, J.;BrJ Ophthalmol,1955
5. Objective measurement of corneal sensitivity;Millodot, M.;Acta Ophthalmol (Kbh),1973