1. Bengtsson B 1988 Characteristics of confirmed glaucoma in early stages
2. Treatment versus non-treatment in chronic open angle glaucoma.;Holmin;Acta Ophthalmol (Copenh),1988
3. Swedish Multicenter Group 1988
4. Observations concerning the course of glaucoma;Sonnsjö;Acta Ophthalmol (Copenh), acc for publ,1989