P. A. Pitagan, K. Melendres, A. Abonita, and K. J. Escaño-Alcaraz, “Phytoremediation of Lead, Arsenic and Chromium Polluted Soil Using Opuntia spp. (Dilang-Baka)”, BIODIVERS, vol. 2, no. 2, pp. 38–45, Oct. 2023.