@article{MM2_1971__4_154034,
     author = {Werner Heise and J\"urgen Timm},
     title = {...-affine {R\"aume.}},
     journal = {Manuscripta mathematica},
     pages = {31--38},
     publisher = {mathdoc},
     volume = {4},
     year = {1971},
     url = {http://geodesic.mathdoc.fr/item/MM2_1971__4_154034/}
}