1. Pseudoexfoliation of the lens capsule;Tarkkanen;Acta Ophthalmol,1962
2. Exfoliation syndrome in various ethnic populations;Forsius;Acta Ophthalmol Suppl,1988
3. Exfoliation syndrome and occludable angles;Ritch;Trans Am Ophthalmol Soc,1994
4. Epidemiology of glaucoma in Northern Europe;Ringvold;Eur J Ophthalmol,1996
5. Epidemiology of the pseudoexfoliation syndrome. A review;Ringvold;Acta Ophthalmol Scand,1999