The content of eLSe is protected by the Copyright Law.
When using materials from this site,
citing the particular course and its author is compulsory.
Commercial use of materials is possible
only with the written consent of the author of the corresponding course.
Including links to eLSe materials in other sites is allowed.
Version 5.5.0-U / 15.10.2007
Copyright® 2001-2007 Bulgarian Virtual University