Impacts of activation energy and modified Darcy law on the motion of Williamson nanofluid over a stretching riga sheet through Porous medium. Eur. J. Pure Appl. Math. [Internet]. 2025 Feb. 16 [cited 2025 Feb. 22];18(1):5616. Available from: https://www.ejpam.com/index.php/ejpam/article/view/5616