Bhattarai, Sujan, and Sandu Subedi. “Determinants of Nepal’s Bilateral Trade in the SAARC Region: A Gravity Model Approach Using PPML Estimator”. Quest Journal of Management and Social Sciences, vol. 7, no. 1, July 2025, pp. 1-20, doi:10.3126/qjmss.v7i1.82005.