@article{JSFS_1939__80__215_0,
     author = {Julin, Armand},
     title = {La correspondance scientifique de {Ernst} {Engel} avec {Adolphe} {Quetelet} (1852-1872)},
     journal = {Journal de la Soci\'et\'e de statistique de Paris},
     pages = {215--221},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {80},
     year = {1939},
     language = {fr},
     url = {http://www.numdam.org/item/JSFS_1939__80__215_0/}
}