@incollection{Groetschel2008, author = {Martin Gr{\"o}tschel}, title = {Tiefensuche}, booktitle = {Kosmos und Zahl - Beitr{\"a}ge zur Mathematik- und Astronomiegeschichte, zu Alexander von Humboldt und Leibniz}, editor = {Hartmut Hecht and Regina Mikosch and Ingo Schwarz and Harald Siebert and Romy Werther}, volume = {58}, pages = {331 -- 346}, url = {http://www.steiner-verlag.de/titel/56734.html}, year = {2008}, }