@misc{https://doi.org/10.22029/jlupub-9873, doi = {10.22029/JLUPUB-9873}, url = {https://jlupub.ub.uni-giessen.de//handle/jlupub/10490}, author = {Kafitz, Willi and {Justus Liebig University Giessen}}, keywords = {Null, Positionssystem, Verallgemeinerungen der Null, ddc:510}, language = {de}, title = {NULL - Geschichte, Bedeutung und Verallgemeinerungen}, publisher = {Universitätsbibliothek Gießen}, year = {2023}, copyright = {Attribution-NonCommercial-NoDerivatives 4.0 International} }