@article{Ebneshahrashoob1995,
  author = {M. Ebneshahrashoob and Milton Sobel},
  title = {Dirichlet analysis for inverse multinomial with both quota and quota-free cells},
  journal = {Computational Statistics \& Data Analysis},
  year = {1995},
  volume = {19},
  number = {3},
  pages = {293--307},
  url = {http://www.sciencedirect.com/science/article/B6V8V-3YB56GW-S/1/3591b2a8c32b436b25fdd8922f5696cc}
}

@article{Ebneshahrashoob1990,
  author = {M. Ebneshahrashoob and Milton Sobel},
  title = {Sooner and later waiting time problems for Bernoulli trials: frequency and run quotas},
  journal = {Statistics \& Probability Letters},
  year = {1990},
  volume = {9},
  number = {1},
  pages = {5--11},
  url = {http://www.sciencedirect.com/science/article/B6V1D-45DHJ42-M/1/ba44b554ba9c068757dd346bcf4d3a6c}
}

@article{Sobel1992,
  author = {Milton Sobel and M. Ebneshahrashoob},
  title = {Quota sampling for multinomial via Dirichlet},
  journal = {Journal of Statistical Planning and Inference},
  year = {1992},
  volume = {33},
  number = {2},
  pages = {157--164},
  url = {http://www.sciencedirect.com/science/article/B6V0M-45GVWVS-F/1/829b5cc4abf81eacdc4f8bd3eff92f25}
}