1. Symposium strabismus: Vertical deviations;Brown;Tr. Acad. Ophth.,1953
2. The etiology of the so-called A and V syndromes;Urist;Am. J. Ophth.,1958
3. du Prey, R.E.: Personal communication.
4. Diagnosis and treatment of anisophoria;Friedenwald;Arch. Ophth.,1936
5. Adler, F.H.: Statement made when discussing Friedenwald's paper.