1. What causes haemorrhoids?;Graham-Stewart, C.W.;Diseases of the Colon and Rectum,1963
2. The internal sphincter and Lord's procedure for haemorrhoids;Hancock, B.D.; Smith, K.;British Journal of Surgery,1975
3. Morphological and Physiological Aspects of Anal Continence and Defaecation. Arscia;Kerremans, R.,1969
4. Haemorrhoids and other diseases of the corpus cavernosum recti and the anal canal;Stelzner, F.;German Medical Monthly,1963
5. The nature of haemorrhoids;Thomson, W.H.F.;British Journal of Surgery,1975