Medeiros, M.F.T., da Silva, P.S. and de Albuquerque, U.P. 2012. Quantification in ethnobotanical research: an overview of indices used from 1995 to 2009. SITIENTIBUS série Ciências Biológicas. 11, 2 (Mar. 2012), 211–230. DOI:https://doi.org/10.13102/scb108.