“Specialized Educational Instituions in Khurasan in the Seljuk Era - 558 A.H 1037-1162 A.C) 429)”. Journal of Studies in History and Archeology, no. 77, Jan. 2023, pp. 367-00, https://jcoart.uobaghdad.edu.iq/index.php/2075-3047/article/view/439.