A toolkit for groundwater mean residence time interpretation with gaseous tracers. - Pablo Fernando Dávila; Christoph Külls; Markus Weiler (Comput. Geosci., 2013)

Towards Intrinsic Molecular Communication Using Isotopic Isomerism. - Gunther Ardelt; Christoph Külls; Horst Hellbrück (Open J. Internet Things, 2018)