1. Endoscope. In: Wikipedia.
2. Gross S, Kollenbrandt M. Technical evolution of medical endoscopy. Acta Polytech J Adv Eng. 2009;49(2/3):15–9.
3. Berci G, Forde KA. History of endoscopy: what lessons have we learned from the past? Surg Endosc. 2000;14(1):5–15.
4. Lamaro VP. Gynaecological endoscopic surgery—past, present and future. In: St Vincent’s clinic proceedings, vol. 12; 2004. p. 23–9. https://www.stvincentsboneandjoint.com.au/pdf/2004-procedings-svc-p-21-24-repicci-updated.pdf.
5. Nitze M. Zur Photographie der menschlichen Harnblase. Med Wochenschr. 1893;178(2):367.