1. Acute suppurative otitis media;Nelson,1974
2. Otitis media: a clinical and bacteriological correlation;Howie;Pediatrics,1970
3. Otitis media in the practice of pediatrics;Coffey;Pediatrics,1966
4. Acute otitis media: etiological and therapeutic aspects;Herberts;Pract. Otorhinolaryngol.,1971