1. Some aspects of anal continence and defaecation;Phillips, S.F.; Edwards, D.A.W.;Gut,1965
2. Morphological and Physiological Aspects ofAnal Continence and Defaecation. Editions Arscia S;Kerremans, R.,1969
3. A physiological study of the pelvic floor in rectal prolapse;Porter, N.H.;Annals of the Royal College of Surgeons of England,1962
4. Experimental study of the reflex mechanism controlling the muscles of the pelvic floor;Parks, A.G.; Porter, N.H.; Melzak, J.;Diseases of the Colon and Rectum,1962
5. Studies of the reflex activity of the external sphincter ani in spinal man;Melzak, J.; Porter, N.H.;Paraplegia,1964