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2. Congenital absence of the lung (agenesis) and other anomalies of the tracheobronchial tree;F., Ferguson C.; Neuhauser, E.D.B.;Amer. J. Roentgenol,1944
3. Clinical aspects of congenital anomalies of the trachea and bronchi;Holinger, P.H.; Johnston, K.C.;Dis. Chest,1957
4. The Child's Lung. Arnold, London. Ch. 2. The bronchial and bronchiolar distiibution and arrangement. Ch. 3. The developmental histology of the bronchial tree;Engel, S.,1947
5. Gray's Anatomy;Gray, H.,1954