Schlossbergstrasse 8
72070 Tuebingen, Germany

phone +49 7071 5492 355
fax +49 7071 5492 356


X-Rubicon is a registered trademark.

Executive director:
Dr. Marco Behrmann

sales tax identification number:

Responsible for content according to §7, German Telemedia Act
Dr. Marco Behrmann

Photographic material:
© Beate Armbruster
© pexels
© Gymglish

Concept, design, and programming:
creactivCONCEPT GmbH

Liability notice / disclaimer:

Dispute settlement
We are not obliged to participate in a dispute settlement at a consumer arbitration board and will not take part in it.

Liability for content
As a service provider, we are responsible for our own content on these pages in accordance with general laws in accordance with Section 7 (1) TMG. According to §§ 8 to 10 TMG, we as a service provider are not obliged to monitor transmitted or stored external information or to investigate circumstances that indicate illegal activity. Obligations to remove or to block the use of information according to general laws remain unaffected. However, liability in this regard is only possible from the time we are being informed of a specific legal violation. We will remove this content immediately after receiving the notice of any violation.

Liability for links
Our offer contains links to external websites of third parties, the content of which we have no influence on. For this reason, we cannot accept any liability for this external content. The respective provider or operator of the pages is always responsible for the content of the linked pages. The linked pages were checked for potential legal violations at the time the link was created. No illegal content was discernible at the time the link was created. A permanent control of the content of the linked pages is not reasonable without concrete evidence of an infringement. We will remove the link immediately after receiving the notice of any violation.

The content and works on these pages created by the site operator are subject to German copyright law. Duplication, editing, distribution, and any kind of use outside the limits of copyright law require the written consent of the respective author or creator. Downloads and copies of this page are only permitted for private, non-commercial use. As far as the content on this page was not created by the operator, the copyrights of third parties are complied with. An particular legal property or content of third parties is marked as such. Should you nevertheless become aware of a copyright infringement, please let us know. We will remove this content immediately after receiving the notice of any violation of property.

Advertising objection
We object to the processing of our company and personal data for direct advertising in accordance with Art. 21 Para. 2 GDPR. This includes the purposes of advertising, address trading, fundraising and market and opinion research. The objection also applies to profiling insofar as it is related to advertising or address trading. Also included are advertising calls and cold calls of any kind to people or functions in our company. Our contact details are in the Robinson list of the DDV German Direct Marketing Association e.V. and the I.D.I. Interest group German Internet e.V. for advertising exclusion. Violations will be punished.