Begmeier, D., P. H. D. Berres, D. Filippi, D. Bilibio, V. R. Bettiol, e W. L. Priamo. “<b>Extraction of Total Polyphenols from Hibiscus (<i>Hibiscus sabdariffa</i> L.) and Waxweed / `sete-Sangrias´ (<i>Cuphea carthagenensis</I>) and Evaluation of Their Antioxidant Potential”. Acta Scientiarum. Technology, vol. 36, nº 3, fevereiro de 2014, p. 545-51, doi:10.4025/actascitechnol.v36i3.19093.