Muhammad, Sani, Suleiman Shamsuddeen, and BaokuIsmail G. “ROBUST PARAMETER ESTIMATION FOR RANDOM EFFECT PANEL DATA MODEL IN THE PRESENCE OF HETEROSCEDASTICITY AND INFLUENTIAL OBSERVATIONS”. FUDMA JOURNAL OF SCIENCES 4, no. 4 (August 13, 2021): 561 - 569. Accessed November 21, 2024. https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/689.