@misc{BSMA_1879_2_3_1_227_1,
     title = {Lettre de {Jean-Albert} {Euler} \`a {Condorcet}},
     journal = {Bulletin des Sciences Math\'ematiques et Astronomiques},
     pages = {227--228},
     publisher = {Gauthier-Villars},
     volume = {2e s{\'e}rie, 3},
     number = {1},
     year = {1879},
     language = {fr},
     url = {http://www.numdam.org/item/BSMA_1879_2_3_1_227_1/}
}