@article{NAM_1894_3_13__97_1, author = {Tissot, A.}, title = {Formules relatives aux foyers des coniques}, journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale}, pages = {97--98}, publisher = {Carilian-Goeury et Vor Dalmont}, volume = {3e s{\'e}rie, 13}, year = {1894}, language = {fr}, url = {http://archive.numdam.org/item/NAM_1894_3_13__97_1/} }