This author has not been identified. Look up 'Angelika Mader' in GoogleThis author has not been identified. Look up 'Henrik C. Bohnenkamp' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'Yaroslav S. Usenko' in GoogleThis author has not been identified. Look up 'David N. Jansen' in GoogleThis author has not been identified. Look up 'Johann Hurink' in GoogleThis author has not been identified. Look up 'Holger Hermanns' in Google