Wielandt, Erhard Data Sheets, New Manual of Seismological Observatory Practice (NMSOP), Deutsches GeoForschungsZentrum;
http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:43250 (Publisher version)
DS_5.1_rev1.pdf (Publisher version), 52KB
Wielandt, E. (2009 online): Common seismic sensors. - In: Bormann, P. (Ed.), New Manual of Seismological Observatory Practice (NMSOP), Potsdam : Deutsches GeoForschungsZentrum GFZ, 1-10.https://doi.org/10.2312/GFZ.NMSOP_r1_DS_5.1