Responsibility for this website:
Performance design international GmbH
Reuterstraße 20
53113 Bonn
Tel.: +49 (0) 228 – 243 9016
Fax: +49 (0) 228 – 243 9010
Managing Director: Klaus D. Wittkuhn
Registered office: Bonn, registered at the Local Court Bonn, registration number HRB 9602

Content of the Website
The authors refuse all responsibility regarding timeliness, factual correctness and completeness of the information on this website, excluding deliberate or grossly negligent mistakes. This relates to any material or ideational damage of third parties created by this website. All offers are non-binding and subject to changes. The authors reserve the right to change, amend or delete the website or parts thereof, without anouncement as well as the right to terminate the website temporarily or finally.

The authors endeavour to recognise the copyright of all graphics, texts, audio and video clips used in their publications. All third party trademarks and brands mentioned on this website are subject to unrestricted conditions of the relevant labelling laws as well as the rights of ownership. The authors of the website retain the copyrights of all published objects created by the authors. Duplication or any form or use of those graphics, texts, audio and video clips in electronic or printed publications is subject to the explicit agreement by the authors.

External references and links
On May 12th, 1998 the Hamburg District Court ruled, that any links to other website might entail co-responsibility for the linked websites. According to the District Court this can only be averted by explicitly distancing oneself from those contents. The authors of this website have added links to other websites, which are produced and updated solely by others. The following statement applies to all those links: The authors have no influence on the design nor the content of other websites. Therefore the authors distance themselves explicitly from the content of those other websites even if there is a link from the authors' website to the other website." This declaration applies to all links published on this website as well as all content of those websites accessible from this website through links or banners.

Data protection
The input of oll personal data (e-mail address, names, postal address) on this website is completely voluntary. The authors explicitly state, that no such data will be passed on to any third party.

Non-liability clause
This disclaimer is part of this website. If any sequences or parts of the disclaimer do not conform or do not fully conform with current law, all other parts thereof will remain valid.


  • Klaus Wittkuhn was awarded the

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  • Project example.
    Re-organization of the State Education Inspectorate of the Republic of Macedonia finalized.
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