@article{MZ_1973__130_171866,
     author = {Christan Herrmann},
     title = {S-verklebte {Summen} von {Verb\"anden.}},
     journal = {Mathematische Zeitschrift},
     pages = {255--274},
     publisher = {mathdoc},
     volume = {130},
     year = {1973},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1973__130_171866/}
}