Anwer, K. A., and K. A. Ahmad. “Reasons for the Scientific Tours of Andalusians Scientists to the Islamic East in the (7th and 8th A.H/13th and 14th AD)”. Journal of University of Human Development, vol. 7, no. 4, Nov. 2021, pp. 43-54, doi:10.21928/juhd.v7n4y2021.pp43-54.