@article{MSH_1991__113__5_0,
     author = {Guin, Dominique},
     title = {La notion d'op\'erateur dans une mod\'elisation cognitive de la compr\'ehension des probl\`emes additifs},
     journal = {Math\'ematiques informatique et sciences humaines},
     pages = {5--33},
     publisher = {Ecole des hautes-\'etudes en sciences sociales},
     volume = {113},
     year = {1991},
     zbl = {0800.92169},
     language = {fr},
     url = {http://www.numdam.org/item/MSH_1991__113__5_0/}
}