It is now in its 7th edition, which has been translated into Spanish, German, French, Italian, Portuguese, Chinese, Korean, Greek, Euskara (Basque language), and in Arabic. His book is used as a standard textbook in India, Europe, South Africa, Australia and South East Asia, and is also widely used in the US, Canada, and South America. He has been working at The University of Texas at Arlington since 1990 and has had supervised 16 Ph.D. and more than 200 M.S. projects/ thesis.[1]