Vesga-Bravo, G.J. and Escobar-Sánchez, R.E. 2018. Work on mathematical problem solving and its effect on the beliefs of high school students. Revista de Investigación, Desarrollo e Innovación. 9, 1 (Aug. 2018), 103–114. DOI:https://doi.org/10.19053/20278306.v9.n1.2018.8270.