Chapters by Mr. Ratislav Hejj

• Book Chapter Endoscopy in Renal Cancer Organ Preservation Treatments
  by J.G. Calleary, T. Lee, B. Burgess, R. Hejj and P. Naidu in the book "Endoscopy - Innovative Uses and Emerging Technologies" edited by Somchai Amornyotin, ISBN 978-953-51-2172-5, InTech, September 9, 2015
• Book Chapter Urology: The Home of Endoscopy
  by Rastislav Hejj, Marie McNulty and John G. Calleary in the book "Advances in Endoscopic Surgery" edited by Cornel Iancu, ISBN 978-953-307-717-8, InTech, November 11, 2011