@article{NAM_1852_1_11__406_1,
     author = {Catalan, E.},
     title = {Trigonom\'etrie sph\'erique. {Th\'eor\`eme} de {Legendre}},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {406--408},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {1e s{\'e}rie, 11},
     year = {1852},
     language = {fr},
     url = {http://www.numdam.org/item/NAM_1852_1_11__406_1/}
}