Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1990__45_6_141486, author = {D. Laugwitz}, title = {Kettenwurzeln und {Kettenoperationen.}}, journal = {Elemente der Mathematik}, pages = {89--98}, publisher = {mathdoc}, volume = {45}, number = {6}, year = {1990}, language = {de}, url = {http://geodesic.mathdoc.fr/item/ELMA_1990__45_6_141486/} }
D. Laugwitz. Kettenwurzeln und Kettenoperationen.. Elemente der Mathematik, Tome 45 (1990) no. 6, pp. 89-98. http://geodesic.mathdoc.fr/item/ELMA_1990__45_6_141486/