Teógenes M. Souza; Maria F.B.M. Braga; José G.M Costa; Antônio A.F. Saraiva; Henrique D.M. Coutinho. Additive Effects of Pityrogramma Calomelanos L. (link.) Combinated With Aminoglycosides Against Staphylococcus Aureus. ijp 2012, 4, 564-566.