1. The enigma of typical total monochromasy;Alpern;Am. J. Ophthal.,1960
2. π1 Cone monochromatism;Alpern;Archs Ophthal., N.Y.,1965
3. Blue monocone monochromasy: a new color vision defect;Blackwell;J. opt. Soc. Am.,1957
4. Blue monocone monochromasy: comparison with rod monochromasy;Blackwell;J. opt. Soc. Am.,1959
5. Visual functions of “typical” and “atypical” congenital achromatopsia;Blackwell;Am. J. Ophthal.,1960