Parmikanti K, Rusyaman E. Grundwald-Letnikov Operator and Its Role in Solving Fractional Differential Equations. EKSAKTA [Internet]. 2022 Sep. 30 [cited 2025 Jun. 3];23(03):223-30. Available from: https://eksakta.ppj.unp.ac.id/index.php/eksakta/article/view/331