Reinhard Rürup passed away last Friday, April 6, 2018, at the age of 83. We are deeply saddened by this loss. Reinhard Rürup has critically accompanied and actively supported the project from the very beginning as a member ouf our advisory board . We thank him for his great commitment and hope that we can continue to live up to the confidence he has placed in our project. He will leave a big gap as a scholar and as a human being.