Bugno, A., A. A. B. Almódovar, T. C. Pereira, and T. de J. A. Pinto. “Use of Petrifilm® for Bacteria and Fungi Counting in Herbal Drugs”. Instituto Adolfo Lutz Journal - RIAL, vol. 64, no. 1, Jan. 2005, pp. 20-24, doi:10.53393/rial.2005.64.33028.