1. Sacrococcygeal pilonidal cyst;Berkowitz;Am. J. Surg.,1949
2. Infected pilonidal sinus;Davies;Surg., Gynec. & Obst.,1945
3. The operative treatment of pilonidal sinus: with special reference to the type of suture material as a factor in recurrence;Dunphy;Surgery,1937
4. Origin of pilonidal sinus, with analysis of its comparative anatomy and histogenesis;Fox;Surg., Gynec. & Obst.,1935
5. Marsupialization; a surgical procedure for the eradication of pilonidal cyst and sinuses;Freund;Am. J. Surg.,1948