van Elk J., Doornhof D., Bommer J. J., Bourne S. J., Oates S. J., Pinho R., and Crowley H. “Hazard and Risk Assessments for Induced Seismicity in Groningen”. Netherlands Journal of Geosciences, vol. 96, Jan. 2018, pp. 259-6, doi:10.1017/njg.2017.37.