If you find OpenGeoSys useful for your research please cite us!
Kolditz, O. and Görke, U.-J. and Shao, H. and Wang, W. (2012): Thermo-Hydro-Mechanical-Chemical Processes in Porous Media - Benchmarks and Examples. vol. 86, ISBN: 978-3-642-27176-2, Springer, DOI:10.1007/978-3-642-27177-9
Bilke, Lars and Flemisch, Bernd and Kalbacher, Thomas and Kolditz, Olaf and Helmig, Rainer and Nagel, Thomas (2019): Development of Open-Source Porous Media Simulators: Principles and Experiences. Transport in Porous Media, vol. 130, p. 337-361, Springer, DOI:10.1007/s11242-019-01310-1