@article{NAM_1861_1_20__87_1, author = {Gagarinn, G.}, title = {Extrait d'une lettre de {M.} {Le} {Prince} {G.} {Gagarinn}}, journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale}, pages = {87--88}, publisher = {Carilian-Goeury et Vor Dalmont}, volume = {1e s{\'e}rie, 20}, year = {1861}, language = {fr}, url = {http://www.numdam.org/item/NAM_1861_1_20__87_1/} }