Dahm, T., D. Becker, M. Bischoff, S. Cesca, B. Dost, R. Fritschen, S. Hainzl, C. Klose, D. Kuehn, S. Lasocki, T. Meier, M. Ohrnberger, E. Rivalta, U. Wegler and S. Husen, Recommendation for the discrimination of human-related and natural seismicity (Letter to the Editor)
Evers, L.G., A. van Geyt, P. Smets and J.T. Fricke, Anomalous infrasound propagation in a hot stratosphere and the existence of extremely small shadow zones
