@article{JDM_1971__73_146597,
     author = {Werner Bos},
     title = {Multiplikation in euklidischen {R\"aumen.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {53--59},
     publisher = {mathdoc},
     volume = {73},
     year = {1971},
     zbl = {0215.09603},
     url = {http://geodesic.mathdoc.fr/item/JDM_1971__73_146597/}
}