1. Acute infections of the larynx and the trachea;McCracken G H, Jr, Eichenwald H.F.,1975
2. Croup (epiglottitis; laryngitis; laryngotracheo-bronchitis);G, Cramblett H.,1977
3. Specific diseases causing obstruction;H, Tooley W.; W, Lipow H.,1977
4. The treatment of croup: continued controversy due to failure of recognition of historic, ecologic, etiologic, and clinical perspectives;D, Cherry J.;J Pediatr,1979
5. The relationship between croup and asthma;Konig, P.,1978