1. En sammenligning av pulpareaksjoner pa˚low og high speed preparering, og om pulpareaksjoner pa˚fyllingsmaterialet cavinyl;Langeland;Norske Tannlaegefor en. Tid,1956
2. Tissue Changes in the Dental Pulp: An Experimental Histologic Study;Langeland;Odont. Tidskr.,1957
3. Pulp Reactions to High Speed Instrumentation;Langeland;Norske Tannlaegefor en. Tid.,1958
4. Histologic Evaluation of Pulp Reactions to Operative Procedures, I;Langeland;Oral Surg., Oral Med. & Oral Path.,1959
5. High Speed Instrumentation: A Histologic and Clinical Evaluation;Langeland;Rev, belge sc. dent.,1959