Md Asaduzzamana, - and Ali, M. Z. (2020) “Existence of Positive Solution for a Nonlinear Weighted Bi-Harmonic System of Elliptic Partial Differential Equations via Fixed-Point Argument”, GANIT: Journal of Bangladesh Mathematical Society, 40(1), pp. 54-70. doi: 10.3329/ganit.v40i1.48195.