Tavora, Francisco José Alves Fernandes, and Francisco Ivaldo Oliveira Melo. “Cassava Growth and Production under Two Planting Arrangements”. Pesquisa Agropecuaria Brasileira, vol. 28, no. 7, July 1993, pp. 823-32, doi:10.1590/S1678-3921.pab1993.v28.3943.