@article{52811,
  author = {Nien Zhang and P Winkel},
  title = {Comparisons of Estimators of process standard deviation in constructing Shewhart control charts with unequal subgroup sizes},
  year = {2010},
  month = {2010-01-20},
  publisher = {Quality Engineering},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=51243},
  language = {en},
}