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E. M. Fitzgerald, C. J. Bean, and R. Reilly, Fracture-frequency prediction from borehole wireline logs using artificial neural networks', Geophysical Prospecting Journal, vol.47, pp.1031-1044

X. Emery, Reducing fluctuations in the sample variogram, Stochastic Environmental Research and Risk Assessment, vol.21, issue.4, pp.391-403, 2007.

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