Wladyslaw Izdebski is a certified bridge teacher and the author of over twenty books and hundreds of articles on bridge theory. He is the former chief editor of the monthly 'Swiat Brydza' (The World of Bridge). Ron Klinger is a leading international bridge teacher and author. He has written over sixty books, some of which have been translated into Bulgarian, Chinese, Danish, French, Hebrew and Icelandic. He has also represented Australia in many world championships and international tournaments since 1976.