WASET
	@article{(Open Science Index):https://publications.waset.org/pdf/9997676,
	  title     = {On Optimum Stratification },
	  author    = {M. G. M. Khan and  V. D. Prasad and  D. K. Rao},
	  country	= {},
	  institution	= {},
	  abstract     = {In this manuscript, we discuss the problem of determining the optimum stratification of a study (or main) variable based on the auxiliary variable that follows a uniform distribution. If the stratification of survey variable is made using the auxiliary variable it may lead to substantial gains in precision of the estimates. This problem is formulated as a Nonlinear Programming Problem (NLPP), which turn out to multistage decision problem and is solved using dynamic programming technique.
},
	    journal   = {International Journal of Mathematical and Computational Sciences},
	  volume    = {8},
	  number    = {3},
	  year      = {2014},
	  pages     = {508 - 512},
	  ee        = {https://publications.waset.org/pdf/9997676},
	  url   	= {https://publications.waset.org/vol/87},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 87, 2014},
	}