1. Investigations into the nature of pericoronitis;Kay;II. Brit J Oral Surg,1966
2. Pericoronitis;Andrews;Oral Health,1967
3. Diagnosis and management of orofacial pain of emotional origin;Dachi;J Oral Surg,1968
4. Investigations into the nature of pericoronitis;Kay;Brit J Oral Surg,1966
5. Clinical periodontology;Glickman,1953