@article {MATHEDUC.05605219,
    author       = {Choulet, Richard},
    title        = {Pourquoi tant de TROCS \dots et si peu de TRONZ ?},
    year         = {2008},
    journal      = {Bulletin - APMEP},
    number       = {479},
    issn         = {0240-5709},
    pages        = {785-792},
    publisher    = {Association des Professeurs de Math\'ematiques de l'Enseignement Public, Paris},
    identifier   = {05605219},
}