Petit, P., E. M. F. Lucas, L. M. Abreu, L. H. Pfenning, and J. A. Takahashi. “Novel Antimicrobial Secondary Metabolites from a Penicillium Sp. Isolated from Brazilian Cerrado Soil”. Electronic Journal of Biotechnology, vol. 12, no. 4, Oct. 2009, pp. 0-0, https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/v12n4-9.