1. Histological Technique;Carlton,1957
2. A Preliminary Investigation of the “Hollow Tube” Theory in Endodontics;Goldman;J. Oral Therap. & Pharmacol,1965
3. The Role of the Blood Clot in Endodontic Therapy;Östby;Acta odont, scandinav,1961
4. Nyere undersokelser ever rotbehandlingsproblemet;Östby;Odont. Tidskr,1963
5. The Controlling of Root Surgery;Rickert,1931