1. Disturbances of the vertical motor muscles of the eyes;Bielschowsky;Arch. Ophth.,1938
2. Occlusion hypertropia;Verhoeff;Arch. Ophth.,1941
3. Cycloduction;Verhoeff;Tr. Am. Ophth. Soc.,1934
4. From Allen, J. H., Strabismus Symposium;Lancaster,1950
5. Surgery of the Oblique Muscles of the Eye;Fink,1951