1. The basis of clinical electroretinography;Karpe;Acta ophth.:,1945
2. A routine method of clinical electroretinography;Karpe;Acta ophth.:,1962
3. Importance of pupil size in clinical ERG;Karpe;Acta ophth.:,1962
4. The normal ERG in single flash clinical electroretinogram;Peterson;Acta ophth.:,1968
5. The clinical electroretinogram in detachment of the retina;Rendahl;Acta ophth.:,1961