@article{ELMA_1981__36_141265,
     author = {J. C. Binz},
     title = {Elementarmathematik und {Didaktik.}},
     journal = {Elemente der Mathematik},
     pages = {97--99},
     publisher = {mathdoc},
     volume = {36},
     year = {1981},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1981__36_141265/}
}