Passos, Leónidas P. “Response of the Grapevine Cv. Merlot to Five Times of Cleft Grafting”. Pesquisa Agropecuaria Brasileira, vol. 16, no. 6, Apr. 2014, pp. 845-9, doi:10.1590/S1678-3921.pab1981.v16.17128.