TY JOUR TI On mathematic formalization of similarity of records of electrical and seismic signals KW seismic and electrical signals KW analytical dependencies KW Lagrange interpolation JO Russian Journal of Earth Sciences AU Kovalenko, M.D. AU Gvishiani, A.D. AU Bogoutdinov, S.R. AU Bernard, P.. AU Zlotnicki, J.. PY 2009 IS 11 PB Geophysical Center of the Russian Academy of Sciences