PAULS, M.P., Loos-Sant'Ana, H. and Sant'Ana-Loos, R.S. (2018) “Interdisciplinarity under consideration of the Theoretical System of Expanded Affectivity: An essay about overcoming difficulties in learning of Mathematics through Language and Semiotics”, International Journal for Innovation Education and Research, 6(7), pp. 33–52. doi:10.31686/ijier.vol6.iss7.1091.