He is the author of over 500 publications and 50 patents.

He is an author of many publications on political and legislative issues.

He is the author of more than 250 scientific publications, including several books.

He is author of over two hundred scientific and popular publications.

She is author of more than 100 publications on contemporary art.

He is the author of more than 390 publications including 23 books on education and multimedia.

He is the author of more than 300 publications including seven books.

During his career he was the author of almost 200 scientific publications.

He is an author of more than 130 publications in scientific journals and books.

He is the author of more than 130 scientific publications and 160 traffic studies.