References
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- Dalenius , T. 1957 . Sampling in Sweden , Stockholm , , Sweden : Almquist and Wicksell .
- Karlin , Samuel . 1959 . Mathematical Methods and Theory in Games, Programming, and Economics, Volume I , Reading , Massachusetts : Addison-Wesley Publishing Company .
- Yates , F. 1960 . Sampling Methods for Censuses and Surveys, Third Edition , London , , England : Charles Griffin and Company .