1. V. N. Dakhnov, 1953 , Electrical prospecting for oil and gas deposits (in Russian) : Gostoptekhizdat, Moscow&Leningrad, 497 pp. (second edition ).
2. C. A. Heiland, 1946 , Geophysical exploration : Prentice-Hall, Inc., N. Y., xiii +1013 .
3. G. V. Keller, and F. C. Frischknecht, 1966 , Electrical methods of geophysical prospecting , Pergamon Press, vii +517 .