@article{ELMA_1976__31_141184,
     author = {Gerhard Wolff},
     title = {'Kreisel'.},
     journal = {Elemente der Mathematik},
     pages = {141--145},
     publisher = {mathdoc},
     volume = {31},
     year = {1976},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1976__31_141184/}
}