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Sampling techniques
Cochran, William G., (1953)
Progress in statistics : European Meeting of Statisticians, Budapest (Hungary), 1972
Gani, J., (1974)
Probability and statistics for business decisions : an introduction to managerial economics under uncertainty
Schlaifer, Robert, (1959)
Optimum stratified sampling using prior information
Ericson, W. A., (1965)
On the minimization of a certain convex function arising in applied decision theory
Ericson, W. A., (1968)