@article{MM2_1990__68_2_155522,
     author = {Andrzej Szczepanski},
     title = {Five dimensional {Bieberbach} groups with trivial centre.},
     journal = {Manuscripta mathematica},
     pages = {191--208},
     publisher = {mathdoc},
     volume = {68},
     number = {2},
     year = {1990},
     zbl = {0789.20058},
     url = {http://geodesic.mathdoc.fr/item/MM2_1990__68_2_155522/}
}