Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1988__43_3_141424, author = {Horst Alzer}, title = {\"Uber {Lehmers} {Mittelwertfamilie.}}, journal = {Elemente der Mathematik}, pages = {50--54}, publisher = {mathdoc}, volume = {43}, number = {3}, year = {1988}, zbl = {0707.26013}, url = {http://geodesic.mathdoc.fr/item/ELMA_1988__43_3_141424/} }
Horst Alzer. Über Lehmers Mittelwertfamilie.. Elemente der Mathematik, Tome 43 (1988) no. 3, pp. 50-54. http://geodesic.mathdoc.fr/item/ELMA_1988__43_3_141424/