Sven Hedin
A scientific assessment of Hedin's character and his relationship to National Socialism was undertaken in the late 1990s and early 2000s at Bonn University by Professor Hans Böhm, Dipl.-Geogr. Astrid Mehmel and Christoph Sieker M.A. as part of the DFG Project "Sven Hedin und die deutsche Geographie" ("Sven Hedin and German Geography").