Essential Oil Composition and Antimicrobial Activity of Three Zingiberaceae from S.Tomé e Príncipe - Martins, A P; Salgueiro, L; Gonçalves, M J; Cunha, A Proença da; Vila, R; Cañigueral, S; Mazzoni, V; Tomi, F; Casanova, J (Planta Medica, 2001)