Estimation of more than one parameters in stratified sampling with fixed budget

@article{Varshney2012EstimationOM,
  title={Estimation of more than one parameters in stratified sampling with fixed budget},
  author={Rahul Varshney and Siddiqui Najmussehar and M. J. Ahsan},
  journal={Math. Meth. of OR},
  year={2012},
  volume={75},
  pages={185-197}
}