Laennec, R.T.: A Treatise on the Diseases of the Chest , J. Forbes (trans.), New York: Hofner Publishing Co. under auspices of NY Academy of Medicine, 1962;, p 784.
Knott, G.A.:  On Emphysema of the Neck Caused by Violent Coughing , Lancet 1:16, 1850;.
McGovern, J.P., et al:  Mediastinal and Subcutaneous Emphysema Complicating Atopic Asthma in Infants and Children , Pediatrics 27:951, 1961;.
Jorgensen, J.R.; Falliers, C.J.; and Bukantz, S.C.:  Pneumothorax and Mediastinal and Subcutaneous Emphysema in Children With Bronchial Asthma , Pediatrics 31:824, 1963;.
Ozonoff, M.B.:  Pneumomediastinum Associated With Asthma and Pneumonia in Children , Amer J Roentgen 95:112, 1965;.
McNicholl, B.:  Pneumomediastinum and Subcutaneous Emphysema in Status Asthmaticus, Requiring Surgical Decompression , Arch Dis Child 35:389, 1960;.
Payne, T.W., and Geppert, L.J.:  Mediastinal and Subcutaneous Emphysema Complicating Bronchial Asthma in a Nine-Year-Old Male , J Allergy 32:135, 1961;.
Rackemann, F.M., and Edwards, M.C.:  Medical Progress; Asthma in Children; Follow-up Study of 688 Patients After Interval of 20 Years , New Eng J Med 246:815, 1952;.
Hamman, L.: Â Spontaneous Mediastinal Emphysema (Henry Sewell Lecture)Â , Bull Hopkins Hosp 64:1, 1939;.
Lawson, J.D.:  The Scratch Sign: Valuable Aid in the Diagnosis of Pneumothorax , New Eng J Med 264:88, 1961;.
Berkley, H.K., and Coffen, T.H.:  Generalized Interstitial Emphysema and Spontaneous Pneumothorax as Complications of Bronchopneumonia , JAMA 72:535, 1919;.
Kelman, S.R.:  Experimental Emphysema , Arch Intern Med 24:332, 1919;.
Macklin, C.C.:  Pneumothorax With Massive Collapse From Experimental Local Overinflation of Lung Substance , Canad Med Assoc J 36:414, 1937;.
Macklin, M.T., and Macklin, C.C.:  Malignant Interstitial Emphysema of Lungs and Mediastinum as Important Occult Complication in Many Respiratory Diseases and Other Conditions; Interpretation of Clinical Literature in Light of Laboratory Experiment , Medicine 23:281, 1944;.
Polak, B., and Adams, H.:  Traumatic Air Embolism in Submarine Escape Training , US Nav Med Bull 30:165, 1932;.
Von Hayek, H.: The Human Lung , V. E. Krahl (trans.), New York: Hafner Publishing Co., Inc., 1960;, p 236.
Armstrong, D., and Mitchell, R.S.:  Spontaneous Pneumothorax During Steroid Therapy of Rapidly Progressive, Far Advanced Pulmonary Tuberculosis , Amer Rev Resp Dis 82:551, 1960;
Macklin, C.C.:  Transport of Air Along Sheaths of Pulmonic Blood Vessels From Alveoli to Mediastinum; Clinical Implications , Arch Intern Med 64: 913, 1939;.
Grossman, J.W., and Cramer, O.S.:  Mediastinal Emphysema Occurring During Acute Paroxysm of Bronchial Asthma , Radiology 52:705, 1949;.
Derbes, V.J.; Weaver, N.K.; and Cotton, A.L.:  Complications of Bronchial Asthma , Amer J Med Sci 222:88, 1951;.
Doub, H.P., and Shea, J.J.:  Pneumatosis Cystoides Intestinalis , JAMA 172:1238, 1960;.
Keyting, W.S., et al:  Pneumatosis Intestinalis: A New Concept , Radiology 76:733, 1961;.
Derbes, V.J.; Engelhardt, H.T.; and Sodeman, W.A.:  Unusual Complications of Bronchial Asthma: Air in Extrapulmonary Spaces , Ann Allerg 3:21, 1945;.
Deamer, W.C.: " Allergies in Childhood ," in S. Z. Levine (ed.): Advances in Pediatrics , Chicago: vol 11, 1960;, Yearbook Publishers, Inc., p 162.
Mitchell, H.S., and Bacal, H.L.:  Pneumothorax and Interstitial Emphysema in Asthma , Canad Med Assoc J 63:467, 1950;.
Thaler, M.M., et at:  Treatment of Mediastinal and Subcutaneous Emphysema Complicating Asthma in Children , J Pediat 65:75, 1964;.
Pecora, D.V., et al:  Tracheotomy in the Treatment of Severe Mediastinal Emphysema , JAMA 166:354, 1958;.