The Dictionary of German Literature. The 20th Century contains authors writing in German whose main work was created in the 20th century. Volume 15 includes articles on Gerhart Hauptmann, Marlen Haushofer, Christoph Hein und Helmut Heißenbüttel. In line with the Dictionary's orientation, there are also entries on numerous well-known representatives of their disciplines, e.g. the scientist Robert Havemann, the cultural historian Friedrich Heer, the philosopher Martin Heidegger and the physicist Werner Heisenberg.