Wendling, Ivar, et al. “Production and Survival of <i>Ilex paraguariensis< i> Minicuttings and Ministumps Cultivated in Semi-Hydroponic System”. Pesquisa Agropecuaria Brasileira, vol. 42, no. 2, Feb. 2007, pp. 289-92, doi:10.1590/S1678-3921.pab2007.v42.7566.