@article{rodríguez-galiano_gonzález-pachón_2009, 
  title={Preference structures, choice functions and their logical form}, 
  DOI={10.15517/rmta.v9i2.215}, 
  publisher={Universidad de Costa Rica}, 
  author={Rodríguez-Galiano and González-Pachón}, 
  year={2009}, 
  month={Feb}
  }