1. Lindberg JG. Clinical studies of depigmentation of the pupillary margin and transillumination of the iris in cases of senile cataract and also in normal eyes in the aged. Diss Helsingfors (Thesis) 1917.
2. Mass screening for fibrillopathia epitheliocapsularis, so-called senile exfoliation or pseudoexfoliation of the anterior lens capsule;Aasved;Acta Ophthalmologica,1971
3. The geographical distribution of fibrillopathia epitheliocapsularis;Aasved;Acta Ophthalmologica,1969
4. Pseudo-exfoliation of the lens among the Navajo Indians;Faulkner;Am J Ophthalmol,1971
5. Prevalence of pseudoexfoliation of the lens in Finns, Lapps, Icelanders, Eskimos, and Russians;Forsius;Trans Ophthalmol Soc U K,1979