Ayala, Alejandro. “Greenhouse Tests With Nematocides for Control of Nematodes Attacking Tomato (Lycopersicon Esculentum Var. Rutgers) in Puerto Rico”. The Journal of Agriculture of the University of Puerto Rico 46, no. 4 (October 1, 1962): 319–327. Accessed August 11, 2022. https://revistas.upr.edu/index.php/jaupr/article/view/12351.