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2. XXI Neurology, pupillometry;Asano;Q. Prog. Rep. M.I.T.,1962
3. Closed-circuit television pupillometer;Green;J. opt. Soc. Am.,1967
4. A new videopupillography;Ishikawa;Ophthalmologica,1970
5. Electronic pupillography, a new instrument and some clinical applications;Lowenstein;Archs Ophthal.,1958