@article{10_4153_CMB_1972_084_2,
     author = {Ballinger, B. T.},
     title = {Completions of {Ordered} {Sets}},
     journal = {Canadian mathematical bulletin},
     pages = {469--472},
     year = {1972},
     volume = {15},
     number = {4},
     doi = {10.4153/CMB-1972-084-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1972-084-2/}
}