@article{DIA_1980__4__1_0,
     author = {Guitart, R. and Lair, C.},
     title = {Calcul syntaxique des mod\`eles et calcul des formules internes},
     journal = {Diagrammes},
     pages = {GL1--GL106},
     publisher = {Universit\'e Paris 7, Unit\'e d'enseignement et de recherche de math\'ematiques},
     volume = {4},
     year = {1980},
     mrnumber = {684746},
     zbl = {0508.03030},
     language = {fr},
     url = {http://www.numdam.org/item/DIA_1980__4__1_0/}
}