Alexander, Alex G., and Rafael Montalvo-Zapata. “Enzyme Studies of Sucrose Decline in Sugarcane Desiccated With Paraquat”. The Journal of Agriculture of the University of Puerto Rico 53, no. 4 (October 1, 1969): 230–250. Accessed December 22, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/11139.