@article{MSH_1965__11__11_0,
     author = {Petruszewycz, M.},
     title = {\`A propos de la prax\'eologie},
     journal = {Math\'ematiques et sciences humaines},
     pages = {11--18},
     publisher = {Ecole Pratique des hautes \'etudes, Centre de math\'ematique sociale et de statistique},
     volume = {11},
     year = {1965},
     language = {fr},
     url = {http://www.numdam.org/item/MSH_1965__11__11_0/}
}