| Technische Fakultät |
| Universität Bielefeld |
| Mail: | Postfach 100131,33501 Bielefeld, Germany | |
| Room: | U4-135 | |
| Phone: | +49 521 106 4820 | |
| Office hours: | just try, or write an email | |
| Email: |
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| Teaching |
| Research |
| Encyclopedia of Substitution Tilings |
| Gallery |
| Other stuff (German) |