Ndanusa A, David BE, Ayantola BB, Abubakar AW. IMPROVING PRECONDITIONED GAUSS-SEIDEL ITERATIVE METHOD FOR L-MATRICES. FJS. 2020;4(1):453-459. Accessed October 29, 2025. http://www.fjsadmin.fudutsinma.edu.ng/index.php/fjs/article/view/67