We feel that some of the results and conclusions in this paper need some comments. 1) The authors claim on p. 59 that their method clearly stands out as the first direct and elegant solution to the problem of the finite dipping dike in gravity prospecting. This is, in fact, not true, since Sharma et al (1970) arrived at exactly the same formulas. In our opinion their method of interpretation seems more realistic in many ways than the authors. For instance they find the depth to the dike from the slope of a straight line fitted to a spectral quantity, where the authors make use of selected points of the spectrum. The latter method seems to be more sensitive to noise than the former, where the straight line is fitted to the spectral quantity over some frequency range, thus some kind of averaging process is performed.

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