B. ITAO, G., and N. M. ANACLETO. “Reduction of Nickeliferous Laterite Ores by Liquefied Petroleum Gas (LPG)”. ASIA PACIFIC JOURNAL OF SOCIAL INNOVATION, vol. 24, no. 2, Apr. 2024, pp. 25-45, https://journals.msuiit.edu.ph/tmf/article/view/520.