Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1957__68_169697, author = {G.M. Petersen}, title = {Sequences of {Iterations.}}, journal = {Mathematische Zeitschrift}, pages = {151--152}, publisher = {mathdoc}, volume = {68}, year = {1957}, zbl = {0078.24802}, url = {http://geodesic.mathdoc.fr/item/MZ_1957__68_169697/} }
G.M. Petersen. Sequences of Iterations.. Mathematische Zeitschrift, Tome 68 (1957), pp. 151-152. http://geodesic.mathdoc.fr/item/MZ_1957__68_169697/