@misc{indiciae8ad359dffda8,
  title = {New variance expressions for systematic sampling: the filtering approach.},
  author = {Ximo Gual-Arnau and Luis M Cruz-Orive},
  year = {2006},
  doi = {10.1111/j.1365-2818.2006.01537.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/16872421/},
  note = {Source identifier: 16872421}
}