@book{justhis6650,
           title = {Trait{\'e} de l'enregistrement des ouvertures de cr{\'e}dit},
          author = {G.J. Favar de Langlade},
         address = {Paris},
       publisher = {F.Didot},
            year = {1812},
             url = {http://www.just-his.be/eprints/6650/}
}