1. The nature and treatment of pterygia;McReynolds, JR;JAMA
2. A pterygium map;Anderson, JR,1954
3. Pterygium among veterans;Darrell, R.W.; Bachrach, C.A.;Arch Ophthalmol,1963
4. Result of survey: study on evaluation of quality ofeye protectors for welding;Society, Japan Welding,1980
5. Contribution a l'etude de la naturc du pterygion;Redslob, E.;Ann Oculist (Paris)