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The 6 references without a DOI — listed, not checked
no DOI — not checkedBoxG. E. P. and JenkinsG. M.: 1976, Time Series Analysis: Forecasting and Control, Holden-Day, San Franciso.
no DOI — not checkedJournelA. G. and HuijbregtsC.: 1978, Mining Geostatistics, Academic Press, New York.
no DOI — not checkedKrigeD. G.: 1951, A statistical approach to some basic mine valuation problems on the Witwatersrand, J. Chimic. Min. Soc. South-Africa 52: 119?139.
no DOI — not checkedMatheronG.: 1971, The Theory of Regionalized Variables and Its Applications, Ecole de Mines, Fontainebleau, France.
no DOI — not checkedOleaR. A.: 1975, Optimum Mapping Techniques Using Regionalized Variable Theory, Series on Spatial Analysis No. 2, Kansas Geological Survey, Lawrence.
no DOI — not checkedTzimopoulos, C. and Papadopoulou, E.: 1992, Application of the theory of regionalized variables for estimating sorptivity in an experimental field in Thessaloniki, Proc. Hellenic Hydrotechnical Association, Larisa, Greece, 9?12 November 1992, pp. 30?38.
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