1. The natural history and clinical course of calculus formation in man.;Ånerud;Journal of Clinical Periodontology,1991
2. Periodontal aspects of conservative dentistry.;Alexander;British Dental Journal,1967
3. Periodontal aspects of conservative dentistry.;Alexander;British Dental Journal,1968
4. Marginal fit of restorations and its relation to periodontal bone level. Part I: Metal fillings.;Björn;Odontologisk Revy,1969
5. Marginal fit of restorations and its relation to periodontal bone level. Part II: Crowns.;Björn;Odontologisk Revy,1970