Ordering MAD families a la Katetov

@article{Ferreira2003OrderingMF,
  title={Ordering MAD families a la Katetov},
  author={Salvador Garc{\'i}a Ferreira and Michael Hrus{\'a}k},
  journal={J. Symb. Log.},
  year={2003},
  volume={68},
  pages={1337-1353}
}