1. Rigid bronchoscopy;Beamis,1999
2. Modern use of rigid bronchoscopy;Beamis,2000
3. A biographical sketch;Becker;Journal of Bronchology,1995
4. History of the rigid bronchoscope;Becker,2000
5. The father of American bronchoesophagology;Boyd;Ann Thorac Surg,1994