This author has not been identified. Look up 'Marian Brezina' in GoogleThis author has not been identified. Look up 'Christian Ketelsen' in GoogleThis author has not been identified. Look up 'Thomas A. Manteuffel' in GoogleThis author has not been identified. Look up 'Stephen F. McCormick' in GoogleThis author has not been identified. Look up 'Minho Park' in GoogleThis author has not been identified. Look up 'John Ruge' in Google