Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1984__39_141337, author = {D. Laugwitz}, title = {Die {Eulersche} {Formel} cos ... + i ...sin ... = ei...}, journal = {Elemente der Mathematik}, pages = {47--47}, publisher = {mathdoc}, volume = {39}, year = {1984}, zbl = {0535.30001}, url = {http://geodesic.mathdoc.fr/item/ELMA_1984__39_141337/} }
D. Laugwitz. Die Eulersche Formel cos ... + i ...sin ... = ei.... Elemente der Mathematik, Tome 39 (1984), p. 47. http://geodesic.mathdoc.fr/item/ELMA_1984__39_141337/