Reis, S, M. / 2001 / Gender differences in high-achieving students in math and science / Journal for the Education of the Gifted 25(1):52~73 Ruiz-Primo, M. A. / On the use of concept maps as an assessment tool in science: What we have learned so far Schmitau, J. / 2004 / Uses of concept mapping in teacher education in mathematics / Proceedings of the 1st International. Conference on Concept Mapping Systems Schuster, P. M. / 2008 / Concept mapping: A critial thinking approach to care planning / David Company Tao, Terence / 2006 / Solving mathematical problems: A personal perspective, first edition / Oxford University Press