Trnkoczy, Amadej Information Sheets, New Manual of Seismological Observatory Practice (NMSOP), Deutsches GeoForschungsZentrum;
http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:43325 (Publisher version)
IS_7.2_rev1.pdf (Publisher version), 10KB
Trnkoczy, A. (2009 online): Using existing communication tower sites as seismic sites. - In: Bormann, P. (Ed.), New Manual of Seismological Observatory Practice (NMSOP), Potsdam : Deutsches GeoForschungsZentrum GFZ, 1-2.https://doi.org/10.2312/GFZ.NMSOP_r1_IS_7.2