References
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- Ruiz Espejo, M. 1986. “Estimable Parametric Functions in Sampling Theory.” Estadística Española 28(112–113): 69–73.
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- Ruiz Espejo, M. 2013. Exactness of Inference in Finite Populations. Madrid: Bubok.
- Ruiz Espejo, M. 2015. “Objective Unbiased Estimation for Nonresponse.” Estadística Española, 57(186): 29–37.
- Ruiz Espejo, M., M. Delgado Pineda, and H.P. Singh. 2006. “Postgrouped Sampling Method of Estimation.” Test 15: 209–226.