@article{Eichler_Gramlich_Kellerhals_Tobler_Rehren_Schwikowski_2018, title={Ice-Core Evidence of Earliest Extensive Copper Metallurgy in the Andes 2700 Years ago: Highlights of Analytical Sciences in Switzerland}, volume={72}, url={https://www.chimia.ch/chimia/article/view/2018_152}, DOI={10.2533/chimia.2018.152}, number={3}, journal={CHIMIA}, author={Eichler, Anja and Gramlich, Gabriela and Kellerhals, Thomas and Tobler, Leonhard and Rehren, Thilo and Schwikowski, Margit}, year={2018}, month={Mar.}, pages={152} }