@incollection{publications1847,
          author = {Jean-Pierre Florens and Bernard Roy},
       booktitle = {Economie Postale : les Fondements},
          editor = {Jo{\"e}lle Toledano},
           title = {Introduction au Chapitre 3 - Les co{\^u}ts},
       publisher = {Economica},
         journal = {Economie Postale: les Fondements},
           pages = {103--115},
            year = {2004},
             url = {https://publications.ut-capitole.fr/id/eprint/1847/}
}