1. Routine examination of the ocular muscles and nonoperative treatment;Berens;Amer. Jour. Ophth.,1927
2. Ocular muscles: A plea for a more thorough study;Goar;Texas State Jour. Med.,1922
3. Studies in ocular fatigue, II. Convergence fatigue in practice;Berens;Trans. Amer. Ophth. Soc.,1926
4. Studies in ocular fatigue, III. Fatigue of accommodation. History, apparatus, and methods of graphic study;Berens;Amer. Jour. Ophth.,1932
5. The determination of the relative position of rest, by prolonged occlusion of one eye;Marlow;New York State Jour. Med.,1915