Gassi, Rosimeire Pereira, et al. “Agro-Economic Performance of Comum Tannia Cultivated With Plant Spacing and Different Seed-Rhizome Masse”. Semina: Ciências Agrárias, vol. 35, no. 1, Feb. 2014, pp. 149-60, doi:10.5433/1679-0359.2014v35n1p149.