@article{NAM_1917_4_17__177_1,
     author = {Joffroy, Joseph},
     title = {Seconde note sur le probl\`eme de {Pappus} g\'en\'eralis\'e},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {177--180},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {4e s{\'e}rie, 17},
     year = {1917},
     language = {fr},
     url = {http://archive.numdam.org/item/NAM_1917_4_17__177_1/}
}