References
- Messerklinger W. Endoscopy of the nose. Urban & Schwarzenberg, Baltimore and Munich 1978; 1
- Papangelou L. A simple technique of photography with the operating microscope. J Laryngol Otol 1976; 90(91)887
- Terrier G. L'endoscopie rhinosinusale moderne. Morell Officina Grafica-Osnago, Italy 1978; 43