@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/}
}