@article{RHM_1997__3_1_49_0,
     author = {Dugowson, St\'ephane},
     title = {L'\'elaboration par {Riemann} d'une d\'efinition de la d\'erivation d'ordre non entier},
     journal = {Revue d'histoire des math\'ematiques},
     pages = {49--97},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {3},
     number = {1},
     year = {1997},
     zbl = {0881.01007},
     language = {fr},
     url = {http://www.numdam.org/item/RHM_1997__3_1_49_0/}
}