1. Epidemiologic characteristics of infections caused by ampicillin-resistant Hemophilus influenzae;Jacobson;Pediatrics,1976
2. Incidence of ampicillin-resistant Hemophilus influenzae in otitis media;Syriopoulou;J Pediatr,1976
3. Manual of clinical microbiology;Lennette,1974
4. Evaluation of a rapid β-lactamase test for detecting ampicillin-resistant Hemophilus influenzae type b;Scheifele;Pediatrics,1976
5. Antibiotics and invasive Haemophilus influenzae;Smith;N Engl J Med,1976