ABDULLAHI, Muhammad Sirajo, KUMAM, Poom, ABUBAKAR, Jamilu and GARBA, Isah Abor. Coincidence and self-coincidence of maps between digital images. Topological Methods in Nonlinear Analysis. Online. 10 December 2020. Vol. 56, no. 2, pp. 607 - 628. [Accessed 8 May 2024].