@article{CMJ_2003_53_2_a8,
     author = {Ball, Richard N. and Hagler, James N.},
     title = {Flow compactifications of nondiscrete monoids, idempotents and {Hindman{\textquoteright}s} theorem},
     journal = {Czechoslovak Mathematical Journal},
     pages = {319--342},
     year = {2003},
     volume = {53},
     number = {2},
     mrnumber = {1983455},
     zbl = {1026.54043},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2003_53_2_a8/}
}