@article{10_4153_CMB_1999_021_x,
     author = {Ferrero, Miguel and Sant{\textquoteright}Ana, Alveri},
     title = {Rings {With} {Comparability}},
     journal = {Canadian mathematical bulletin},
     pages = {174--183},
     year = {1999},
     volume = {42},
     number = {2},
     doi = {10.4153/CMB-1999-021-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1999-021-x/}
}