@article{Gniazdowski2015a,
  title = {Numerical Coding of Nominal Data},
  author = {Zenon Gniazdowski and Michal Grabowski},
  year = {2015},
  doi = {10.26348/znwwsi.12.53},
  researchr = {https://researchr.org/publication/Gniazdowski2015a},
  cites = {0},
  citedby = {9},
  journal = {Zeszyty Naukowe WWSI},
  volume = {9},
  number = {12},
  pages = {53-61},
}