@article{DIA_1990__23__15_0,
     author = {Koudsi, Elie and Diers, Yves},
     title = {Boolo{\"\i}des},
     journal = {Diagrammes},
     pages = {15--41},
     publisher = {Universit\'e Paris 7, Unit\'e d'enseignement et de recherche de math\'ematiques},
     volume = {23},
     year = {1990},
     mrnumber = {1082996},
     zbl = {0715.06016},
     language = {fr},
     url = {http://archive.numdam.org/item/DIA_1990__23__15_0/}
}