1. The Common Sense of Science;Bronowski,1967
2. Clinical Judgement;Feinstein,1967
3. The mechanistic classification of ptosis [review];Frueh;Ophthalmology,1980
4. Histology of levator muscle in congenital and acquired ptosis;Berke;Arch Ophthalmol,1955
5. Studies on congenital genuine blepharoptosis. Morphological and functional investigations of the upper eyelid;Isaksson;Acta Ophthal (Copenh),1962