1. Adda, J. (1975). Ľincompréhension en Mathématiques et les Malentendus. Educational Studies in Mathematics, 6, 311–316.
2. Boaler, J. (1993). Encouraging the Transfer of School Mathematics to the Real World through Integration of Process and Content, Context and Culture. Educational Studies in Mathematics, 25, 341–373.
3. Boaler, J. (1994). The Role of Contexts in the Mathematics Classroom: Do They Make Mathematics More “Real”? For the Learning of Mathematics, 13(2), 12–17.
4. Cerquetti, F. (1981). Quelques Aspects de la Relation aux Mathématiques chez des Èlèves de LEP et Classes Pratiques., Université Paris 7, Paris.
5. Freudenthal, H. (1983). Didactical Phenomelogy of Mathernatical Structure. Dordrecht: Reidel.