@article{osamu_2017_1038387, author = {Osamu, Okuda and Fuchs, Walther}, title = {{Paul Klee 'Ball und Puppe' 1934, 145 (R5) - Ein verschollenes Werk}}, journal = {{Zwitscher-Maschine. Journal on Paul Klee / Zeitschrift für internationale Klee-Studien}}, year = 2017, volume = 4, number = {Autumn}, month = oct, doi = {10.5281/zenodo.1038387}, url = {https://doi.org/10.5281/zenodo.1038387} }