The information published here is collected with care, but does not guarantee to be current, absolutely correct or complete. All services free of charge are non-binding. The maintainer of this service reserves the right to change, add or terminate certain services or parts of them without explicit notification. The maintainer of this service is not liable for contents of foreign pages, which are accessible via a hyperlink. The hyperlinks used in this service are collected with reasonable care. The maintainer cannot influence the current or future contents for foreign pages. So the maintainer is not liable for the contents of those pages and does not usurp it. Only the maintainer of the external pages is liable for illegal, deficient or non-complete contents as for damages, which may occur by using or not-using his information. The liability of the person who makes a hyperlink to that page is excluded. The copyright for the documents on this server always remain with the authors. The University Library endeavours to use self-made or licence-free texts and graphics designing their web services. All trademarks and material copyrighted by third parties mentioned in our texts are under the laws and rules of the corresponding current property rights of the owner.