@article{MSH_1967__20__29_0, author = {Lawoll, C.}, title = {Traverser le miroir}, journal = {Math\'ematiques et sciences humaines}, pages = {29--32}, publisher = {Ecole Pratique des hautes \'etudes, Centre de math\'ematique sociale et de statistique}, volume = {20}, year = {1967}, language = {fr}, url = {http://www.numdam.org/item/MSH_1967__20__29_0/} }