@article{PSMIR_1991___S6_27_0,
     author = {Margolinas, Claire},
     title = {Le contrat didactique},
     journal = {Publications de l'Institut de recherche math\'ematiques de Rennes},
     pages = {27--32},
     publisher = {D\'epartement de Math\'ematiques et Informatique, Universit\'e de Rennes},
     number = {S6},
     year = {1991},
     language = {fr},
     url = {http://www.numdam.org/item/PSMIR_1991___S6_27_0/}
}