Dirk Roessler (University of Potsdam, Germany) worked on the retrieval of the seismic source mechanism for sources situated in laterally varying anisotropic structures. Anisotropy may significantly affect the retrieval of moment tensors. It may produce apparent volumetric components or hide real tensile characteristics of the source. Tests were performed with synthetic data, as well as with data from the West Bohemia earthquake swarm region.