@article{NAM_1916_4_16__223_0,
     author = {Balitrand, F.},
     title = {Construction du centre de courbure de la spirale hyperbolique},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {223--225},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {4e s{\'e}rie, 16},
     year = {1916},
     language = {fr},
     url = {http://www.numdam.org/item/NAM_1916_4_16__223_0/}
}