@misc{indiciae03e0ef3bdad6,
  title = {Estimation of within-stratum variance for sample allocation: Foreign commodity production forecasting},
  author = {Chhikara, R. S. and Perry, C. R., Jr.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19810004005},
  note = {Source identifier: 19810004005}
}