1. Report of the Committee on Collective Investigation Concerning the Ocular Muscles;Howe;Sect. Ophth., A.M.A.,1921
2. Bing: Quoted by Peter, L. C. Intra-ocular Muscles, Philadelphia, Lea and Febiger, 1927, p. 42.
3. Zuni Bellschen Phanomen;Kestenbaum;Ber. uber Deutsch Ophth. Gesellsch.,1925
4. Quoted by Wilbrand and Saenger, Die Neurologie des Auges, München, J. F. Bergmann, 1927, p. 40.
5. Bartels, H. In discussion of paper by Kestenbaum (see 3).