@article{CG_1991___8_57_0,
     author = {Picheral, \'Eric},
     title = {Comment le faire en {LaTeX}},
     journal = {Cahiers GUTenberg},
     pages = {57--58},
     publisher = {Association GUTenberg},
     number = {8},
     year = {1991},
     language = {fr},
     url = {http://archive.numdam.org/item/CG_1991___8_57_0/}
}