1. Alterveranderungen der Pulpa und des Paradontiums;Fröhlich;Dtsch. Zahnaerztl. Z,1970
2. Pulpal Calcifications—A Pathological Process?;Hall,1968
3. Pathology of the Dental Pulp;Hill;J. Am. Dent. Assoc,1934
4. Pulpal Calcifications—A Pathological Process?;Hitchin,1968
5. Electron Microscopy of the Dental Pulp;Quigley;J. Dent. Res,1961