E. s M. Mursidik, N. Samsiyah, and H. E. Rudyanto, “Kemampuan Berpikir Kreatif Dalam Memecahkan Masalah Matetatika Open-Ended Ditinjau Dari Tingkat Kemampuan Matematika Siswa Sekolah Dasar.: Creative Thinking Ability in Solving Open-Ended Mathematical Problems Judging from the Mathematics Ability Level of Elementary School Students”., pedagogia, vol. 4, no. 1, pp. 23–33, Feb. 2015.