@article{NAM_1915_4_15__157_0,
     author = {Malo, E.},
     title = {Interpr\'etation concr\`ete de l{\textquoteright}expression $S=ax^2+2hxy+by^2+2gx+2fy+c$, en $Y$ supposant les coordonn\'ees courantes remplac\'ees par celles d{\textquoteright}un point donn\'e},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {157--166},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {4e s{\'e}rie, 15},
     year = {1915},
     language = {fr},
     url = {http://archive.numdam.org/item/NAM_1915_4_15__157_0/}
}