1. Hair extracted from an ulcer;Anderson;Boston M. & S. J.,1847
2. Sacrococcygeal tumors: adenocarcinoma of a cystic congenital embryonal remnant;Ballantyne;Arch. Path.,1932
3. Pilonidal cyst;Barber;U. S. Nov. M. Bull.,1944
4. Treatment of pilonidal cysts by excision and primary closure;Barker;Mil. Surgeon,1944
5. Pilonidal cyst: the postoperative problem;Barnett;Am. J. Surg.,1944