Majid MSA, Maulana H. A Comparative Analysis of the Productivity of Islamic and Conventional Mutual Funds in Indonesia: Data Envelopment Analysis (DEA) and General Least Square (GLS) Approaches. gamaijb [Internet]. 2012May1 [cited 2024Aug.17];14(2):183 -208. Available from: https://journal.ugm.ac.id/v3/gamaijb/article/view/15367