To cite package ‘BOSO’ in publications use:

  Valcarcel L, San Jose-Eneriz E, Cendoya X, Rubio A, Agirre X, Prósper
  F, Planes F (2024). _BOSO: Bilevel Optimization Selector Operator_. R
  package version 1.0.4, <https://github.com/lvalcarcel/boso>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {BOSO: Bilevel Optimization Selector Operator},
    author = {Luis V. Valcarcel and Edurne {San Jose-Eneriz} and Xabier Cendoya and Angel Rubio and Xabier Agirre and Felipe Prósper and Francisco J. Planes},
    year = {2024},
    note = {R package version 1.0.4},
    url = {https://github.com/lvalcarcel/boso},
  }