1. The lung air sac system of birds. A contribution to the functional anatomy of the respiratory apparatus;Duncker;Ergebn. Anat. Entwickl.-Gesch.,1971
2. Structure of avian lungs;Duncker;Respir. Physiol.,1972
3. General morphological principles of amniotic lungs;Duncker,1978
4. Intrapulmonary CO2 receptors in the duck. I. Stimulus specificity;Fedde;Respir. Physiol.,1974
5. Respiration;Fedde,1976