@article{AMPA_1813-1814__4__90_1,
     author = {Bret},
     title = {Correspondance},
     journal = {Annales de math\'ematiques pures et appliqu\'ees},
     publisher = {Imprimerie de P. Blachier-Belle},
     address = {Nismes},
     volume = {4},
     year = {1813-1814},
     pages = {90-92},
     language = {fr},
     url = {http://www.numdam.org/item/AMPA_1813-1814__4__90_1}
}

Bret. Correspondance. Annales de mathématiques pures et appliquées, Volume 4 (1813-1814) , pp. 90-92. http://www.numdam.org/item/AMPA_1813-1814__4__90_1/