All rights are reserved. The use of texts, photos, images, sound and audio visual items is allowed only with the written permission of the website owner and with a published reference to the author, unless otherwise stated.

Parts of the content of this website are distributed under the CC BY-SA 3.0 CZ Creative Commons Licence. The content released under the Free Licence is always marked by the  symbol or by the compact symbol. The work defined in this way can be used (abiding by the terms of use), the source must be, however, referred to (the shortened version of the credit – “Akademie věd ČR”/ “Czech Academy of Sciences” can be used). Photographs contain neither property nor model release.