E. P. . Vendruscolo, A. H. A. Rodrigues, S. R. Correia, P. R. Oliveira, L. F. C. Campos, and A. Seleguini, “Economic analysis of crisp lettuce production in different planting spacing and soil cover”, Adv. Hort. Sci., vol. 33, no. 4, pp. 449–455, Feb. 2020.