Wennersten

Increasing resistance to beta-lactam antibiotics among clinical isolates of Enterococcus faecium: a 22-year review at one institution

G. Eliopoulos, M. Ferraro, K. Ruoff, 1991, Antimicrobial Agents and Chemotherapy.

Multiply high-level-aminoglycoside-resistant enterococci isolated from patients in a university hospital

S. Fischer, I. Nachamkin, G. Talbot, 1988, Journal of clinical microbiology.