@article{CG_1990___5_41_0,
     author = {Borceux, Francis},
     title = {De la construction de diagrammes},
     journal = {Cahiers GUTenberg},
     pages = {41--48},
     publisher = {Association GUTenberg},
     number = {5},
     year = {1990},
     language = {fr},
     url = {http://www.numdam.org/item/CG_1990___5_41_0/}
}