@article{NAM_1901_4_1__14_1,
     author = {Iaggi, E.},
     title = {D\'emonstration directe du th\'eor\`eme d{\textquoteright}addition de la fonction elliptique $Z(x)$},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {14--16},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {4e s{\'e}rie, 1},
     year = {1901},
     language = {fr},
     url = {http://archive.numdam.org/item/NAM_1901_4_1__14_1/}
}