@article{M2AN_1977__11_3_241_0,
     author = {Crouzeix, Michel and Ruamps, Fran\c{c}oise},
     title = {On rational approximations to the exponential},
     journal = {RAIRO. Analyse num\'erique},
     pages = {241--243},
     publisher = {Centrale des revues, Dunod-Gauthier-Villars},
     address = {Montreuil},
     volume = {11},
     number = {3},
     year = {1977},
     mrnumber = {454094},
     zbl = {0369.65001},
     language = {en},
     url = {http://www.numdam.org/item/M2AN_1977__11_3_241_0/}
}