Martina Hefter Wins 20th German Book Prize for Novel “Hey guten Morgen, wie geht es dir?” Frankfurt, Germany – Martina Hefter has been announced as the winner of the 20th German Book Prize for her novel “Hey guten Morgen, wie geht es dir?” (Klett-Cotta). The prestigious award, presented annually by the Stiftung Buchkultur und Leseförderung des Börsenvereins des Deutschen Buchhandels (Foundation…