@article{104678, author = {J\"urgen Timm}, title = {Die L\"osung eines Problems von Havel}, journal = {Archivum Mathematicum}, volume = {005}, year = {1969}, pages = {25-28}, zbl = {0238.16029}, mrnumber = {0277576}, language = {de}, url = {http://dml.mathdoc.fr/item/104678} }
Timm, Jürgen. Die Lösung eines Problems von Havel. Archivum Mathematicum, Tome 005 (1969) pp. 25-28. http://gdmltest.u-ga.fr/item/104678/
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