%% -*-BibTeX-*- @book{groetschelgroetschel2016, authors = "{Iris Gr{\"o}tschel and Martin Gr{\"o}tschel}", title = "{Mathematical Berlin: Science, Sights, and Stories}", publisher = "{Berlin Story Verlag GmbH}“ pages = "159", year = "2016", ISBN = "978-3-95723-080-5", language = "English", }