Novikienė, Regina, and Liuda Šiaučiukėnienė. “Contradictions of a Mathematics Didactic System in the Realization of a Traditional Study Model”. Lietuvos Matematikos Rinkinys, vol. 43, no. spec., Dec. 2003, pp. 389–393, https://doi.org/10.15388/LMR.2003.32460.