Team, S. “Iterative Algorithm for Finite Family of k_i-Strictly Pseudo-Contractive Mappings for a General Hierarchical Problem in Hilbert Spaces: Issara Inchan, T. Gadeewong”. Thai Journal of Mathematics, vol. 12, no. 3, Dec. 2014, pp. 699-15, https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/482.