1. Essentials of anorectal swgery;Goldberg, S.M.; Gordon, P.H.; Nivatvongs, S.,1980
2. Lateral subcutaneous internal sphincterotomy versus anal dilatation in the treatment of fissure in ano in outpatients: a prospective randomised study;Jensen, S.L.; Lund, F.; Nielsen, O.V.; Tange, G.;BrMedJ,1984
3. The conservative treatment of fisure-in-ano;Gough, M.J.; Lewis, A.;BrJ Surg,1983
4. Fissure-in-ano: the initial management and prognosis;Lock, M.R.; Thomson, J.P.S.;Br J Surg,1977
5. Treatment of fissure in ano;Fries, B.; Rietz, K.A.;Acta ChirScand,1964