1. An empirical study of stabilities of estimators and variance estimators in unequal probability sampling for sample sizesn=3 or 4;Bayless;J. Am. Statist. Assoc.,1970
2. A model of systematic sampling with unequal probabilities;Brewer;Aust. J. Statist.,1963
3. Chaudhuri, A., Vos, J.W.E., 1988. Unified Theory and Strategies of Survey Sampling. Elsevier, Amsterdam.
4. Chromy, J.R., 1974. Pairwise probabilities in probability non replacement sampling. Proc. Am. Statist. Assoc. Soc. Statist. Sec. 269–274.
5. Cochran, W.G., 1978. Two recent areas of sample survey research. In: Srivastava, J.N. (Ed.), A survey of Statistical Design and Linear Models, pp. 101–114.