@article{NAM_1873_2_12__495_0,
     author = {Del\`egue},
     title = {Nouvelle d\'emonstration du parall\'elogramme des forces},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {495--500},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {2e s{\'e}rie, 12},
     year = {1873},
     language = {fr},
     url = {http://www.numdam.org/item/NAM_1873_2_12__495_0/}
}