1. Citología pulmonar;Azúa;Citología,1979
2. Citología;Azúa,1980
3. The origin of pulmonary alveolar macrophages;Brunstetter;Arch Intern Med,1971
4. Examination of sputum cells;Chodosh;N Engl J Med,1970
5. Structural changes in the cilliate epithelial cells during the common cold;Bryan;Trans Amer Acad Opthlamol Otolaryngol,1953