1. A New Treatment for Chronic Secretory Otitis Media;Armstrong;Arch. Otolaryngol.,1954
2. Keeler, N. S.: Quoted from Questionnaire.
3. Idiopathic Hemotympanum - Fact or Fancy?;Armstrong;Arch. Otolaryngol.,1962
4. Idiopathic Hemotympanum; New Approach;Burton;The Laryngoscope,1961