1. Amberg R, Lemmen KD, Pollak S, Strutz I, Unsold R. Postmortale endoskopische Diagnostik. Beitr-Gerichtl-Med. 1992;50:241–50.
2. Auth DC. Fundamentals of lasers for endoscopy and la-ser tissue interactions. In: Jensen DM, Brunetaud J-M, editors. Medical laser endoscopy. Dordrecht: Kluwer; 1990. p. 1–16.
3. Bauer BL, Hellwig D. Minimally invasive neurosurgery I. Acta Neurochirurgia Supplement, vol. 54. Wien, New York: Springer; 1991.
4. Bauer BL, Hellwig D. Minimally invasive neurosurgery II. Acta Neurochirurgia Supplement, vol. 61. Wien, New York: Springer; 1994.
5. Caemaert J, Abdullah J. Endoscopic management of colloid cysts. Tech Neurosurg. 1996;1:185–200.