Author of the design, code and text in this web site: Uldis Mikelsons.

Materials in this web site are provided to give information in easy manner for everyone who are interested on this theme, also for educational and professional needs.

It is permitted to use these materials for personal needs and to quote and retell these in student's papers.
Anyone must indicate the author and original source in any case. It is not permitted to make not authorised changes in any way if someone quote or retell these materials.

It is forbidden to use these materials without written permission of the author in any commercial form, including publishing in newspapers, magazines, web sites or in any mass media, or publish in another form, to distribute, to put them in some way for electronic download, to use them in any commercial seminars or consultations, to deceive about authorship of them, or to infringement rights and legal interests of the author in any way.

All materials in this web site are protected by the Copyright Law and Criminal Law of the Republic of Latvia: Latvijas Republikas Autortiesību likums un Krimināllikums.