1. Short History of the Development of Endobronchial Ultrasound – A Story of Success
2. EBUS-A new dimension in bronchoscopy. Editorial;Becker;Respiration,2006
3. Usefulness of transluminal ultrasonography in the evaluation of bronchial stenosis secondary to tuberculosis;Koga;J Jpn Soc,1994
4. Neue Endoschall Minisonde in der täglichen Praxis;Frank;Endosk Heute,1994