@Inproceedings{EPTCS321.1,
  author    = {Moraz\'an, Marco T.},
  year      = {2020},
  title     = {How to Design While Loops},
  editor    = {Hage, Jurriaan},
  booktitle = {{\rm Proceedings Eighth and Ninth International Workshop on}
               Trends in Functional Programming in Education,
               {\rm Vancouver, Canada and Krakow, Poland, 11th June 2019 and 12th February 2020}},
  series    = {Electronic Proceedings in Theoretical Computer Science},
  volume    = {321},
  publisher = {Open Publishing Association},
  pages     = {1-18},
  doi       = {10.4204/EPTCS.321.1},
}