@article{ronner_kuhn_landolt_aeberli_zürich_2022, title={Dr. Joachim Hefti (1876-1949)}, DOI={10.20384/zop-2269}, publisher={[Steno-Verlag]}, author={Ronner, Max and Kuhn, Friedrich and Landolt, Emil and Aeberli, Jakob and Zürich}, year={2022}, month={Sep} }