1. M. Malpighi Opera Omnia;Bartholinus,1687
2. Floyer, Sir John: Treatise on Asthma, 1698.
3. Laennec, R. T. H.: Treatise on Diseases of the Chest and on Mediate Auscultation, 1819.
4. Emphysema of the Lung;Christie;Brit. Encyc. Med. Pract.,1937
5. A Study of the Human Pleura Pulmonalis; Its Eelation to the Blebs and Bullae of Emphysema;Miller;Am. J. Roentgenol.,1926