This author has not been identified. It may be one of the following persons: Look up 'Pieter Philippaerts' in GoogleThis author has not been identified. Look up 'Yves Younan' in GoogleThis author has not been identified. Look up 'Stijn Muylle' in GoogleThis author has not been identified. Look up 'Frank Piessens' in GoogleThis author has not been identified. Look up 'Sven Lachmund' in GoogleThis author has not been identified. Look up 'Thomas Walter' in Google