@book{criptografia23,
  title        = {La criptografia que et cal saber},
  author       = {Jordi Herrera-Joancomart\'i and Cristina P\'erez-Sol\`a},
  year         = 2023,
  url          = {https://criptografia.cat/},
  editor       = {Jordi Herrera-Joancomart\'i and Cristina P\'erez-Sol\`a}
}