In vitro susceptibilities of 176 clinical isolates of Streptococcus pneumoniae to 11 beta-lactams, erythromycin, and tetracycline36667, Vanhoof, R., Carpentier M., Glupczynski Y., Gordts B., Magerman K., Nyssen H.J., Simon A., Surmont I., Van de Vyvere M., Van Landuyt H., et al. , Acta Clin.Belg., 0/0/1996, Volume 51, Issue 6, Number 385, p.377 - 385, (1996)