IRIS, Incorporated Research Institutions for Seismology, USAwww.iris.edu.
REF TEK, Refraction Technology, Inc., USA www.reftek.com.
SVIBS, Structural Vibration Solutions A/S, Denmark www.svibs.com.
URIIT, Ugra Research Institute for Information Technologyhttp://www.uriit.ru/version/en/.
Federal State Unitary Enterprise "Research Institute of Pulse Technique" (RIPT)http://www.niiit.ru/english/.
Institute of Physics of the Earth O.J.Shmidta http://www.ifz.ru/.
Copyright 2006 SYNAPSE SCIENCE CENTER