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2. The jackknife estimate of variance;Efron;Ann Stat,1981
3. On sensitivity estimation for nonlinear mathematical models;Sobol’;Matematicheskoe Modelirovanie,1990
4. Universal approximation using radial-basis-function networks;Park;Neural Comput,1991
5. A statistical approach to some mine valuation and allied problems on the Witwatersrand;Krige,1951