1. Pott P. Chirurgical Observations Relative to the Cataract, the Polypus of the Nose, the Cancer of the Scrotum, the Different Kinds of Ruptures, and the Mortification of the Toes and Feet. London Carnegy, London, UK; 1775. p. 63-68.
2. A Treatise on Pathological Anatomy;Andral;Hodges & Smith Dublin Ohio USA,1831
3. Budd G. On Diseases of the Liver. London Churchill, London, UK; 1845. p. 314-315.
4. Hutchinson JC. Debate on cancer. Trans Path Soc Lond, London, UK; 1874. 25 p.
5. Bruen ET. In System of Practical Medicine. Low, Marston, Searle & Rivington, London, UK. 1885;3:871.