This author has not been identified. Look up 'Martin Grund' in GoogleThis author has not been identified. Look up 'Jens Krüger' in GoogleThis author has not been identified. Look up 'Hasso Plattner' in GoogleThis author has not been identified. Look up 'Alexander Zeier' in GoogleThis author has not been identified. Look up 'Philippe Cudré-Mauroux' in GoogleThis author has not been identified. Look up 'Samuel Madden' in Google