@article{NAM_1915_4_15__214_0,
     author = {Balitrand, F.},
     title = {Note sur la cardio{\"\i}de},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {214--222},
     year = {1915},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {4e s{\'e}rie, 15},
     language = {fr},
     url = {https://www.numdam.org/item/NAM_1915_4_15__214_0/}
}