1. Anthonisen, N. R., Bass, H., Heckscher, T.: Xe133 studies of patients after pneumonectomy. Scand. J. resp. Dis. 49, 81 (1968).
2. Banyai, A. L., Gordok, B. L.: Advances in cardiopulmonary dieseases. Vol. III. Chicago: Year Book Med. Publ. 1966.
3. Bass, H., Henderson, J. A. M., Heckscher, T., Oriol, A., Anthonisen, N. R.: Regional structure and function in bronchiectasis. A correlative study using bronchography and Xe133. Amer. Rev. resp. Dis. 97, 598 (1968).
4. Bates, D. V., Gordon, C. A., Paul, G. I., Place, R. E. G., Woolf, C. R.: Chronic bronchitis. Report on the third and fourth stages of the coordinated study of chronic bronchitis in the department of veterans affairs, Canada. Med. Serv. J. Canada 12, 5 (1966).
5. Baumann, P. C., Unseld, H., Bühlmann, A. A., Rossier, P. H.: Die Lungenfunktion nach schweren Thoraxverletzungen. Praxis 57, 255 (1968).