DISCLAIMERAny duplication or distribution - partly or as a whole - in any kind of medium requires the written approval of HechtLab. This also applies for entries in electronic databases and duplication on CD-ROM. Texts and images are proprietary and must neither be reproduced nor re-used or used for any commercial purpose.
Despite a thorough control of all content, HechtLab cannot be made liable for the content of external links. Solely the corresponding operating company is responsible for the pages linked.