“Keberlanjutan Perdagangan Karet Alam Indonesia Ke Pasar Strategis: Perbandingan OLS Dan PPML Dalam Regresi Data Panel: The Sustainability of Indonesian Natural Rubber Trade in Strategic Markets: A Comparison of OLS and PPML in Panel Data Regression”. Indonesian Journal of Agricultural Resource and Environmental Economics, vol. 5, no. 1, June 2026, pp. 52-66, https://doi.org/10.29244/jgesms61.