@article{MM2_1976__18_154400,
     author = {Michael Schneider},
     title = {Tubenumgebungen {Steinscher} {R\"aume.}},
     journal = {Manuscripta mathematica},
     pages = {391--398},
     publisher = {mathdoc},
     volume = {18},
     year = {1976},
     zbl = {0343.32013},
     url = {http://geodesic.mathdoc.fr/item/MM2_1976__18_154400/}
}