Stephen, S., and M. . Haifan. “Estimation of Lateritic Nickel Resources Using the Inverse Distance Weighting (IDW) Method at PT Five Star Indonesia, Petasia District, Central Sulawesi Province”. Priviet Social Sciences Journal, vol. 6, no. 2, Feb. 2026, pp. 136-45, doi:10.55942/pssj.v6i2.1594.