Approximate solution of space fractional order diffusion equations by Gegenbauer collocation and compact finite difference scheme: Solution of space fractional diffusion equation. J. Nig. Soc. Phys. Sci. [Internet]. 2023 May 22 [cited 2024 Nov. 27];5(2):1368. Available from: https://journal.nsps.org.ng/index.php/jnsps/article/view/1368