(Zimbabwe) University of Zimbabwe - Department of Mathematics

(Zambia) University of Zambia, Lusaka - Mathematics and Statistics faculty.

(Mauritius) University of Mauritius - Department of Mathematics.

(Swaziland) University of Swaziland - Department of Mathematics.

(Ghana) University of Ghana - Department of Mathematics.

(Nigeria) University of Benin, Benin City - Department of Mathematics.

(Tanzania) University of Dar es Salaam - Department of Mathematics.