Donald J. Krogstad, Thomas R. Korfhagen, Robert C. Moellering, Christine Wennersten, Morton N. Swartz, Stanislaw Perzynski, Julian Davies,
Aminoglycoside-Inactivating Enzymes in Clinical Isolates of Streptococcus Faecalis Journal of Clinical Investigation. ,vol. 62, pp. 480- 486 ,(1978) ,
10.1172/JCI109149