He has published over 80 papers in international scientific journals.
He has published over 360 scientific papers on these subjects.
He has published over 80 books and 400 academic papers.
He has published over 500 scientific papers and 3 books.
He has published over 250 papers and edited more than 20 books.
As of 2010, he has published over 250 scientific papers.
Along with his colleagues he has published over 100 scientific papers.
He has published over 400 scientific papers and books in these areas.
He became a professor in 1991 and has published over 260 scientific papers.
He has held more than 15 patents and published over 300 papers.