@article{10_4064_fm_125_2_155_165,
     author = {Julius Barbanel},
     title = {An ordering of normal ultrafiltres},
     journal = {Fundamenta Mathematicae},
     pages = {155--165},
     publisher = {mathdoc},
     volume = {125},
     number = {2},
     year = {1985},
     doi = {10.4064/fm-125-2-155-165},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-125-2-155-165/}
}