@article{10_4064_fm219_2_3,
     author = {Alan D. Taylor},
     title = {Prediction problems and ultrafilters on $\omega$},
     journal = {Fundamenta Mathematicae},
     pages = {111--117},
     publisher = {mathdoc},
     volume = {219},
     number = {2},
     year = {2012},
     doi = {10.4064/fm219-2-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm219-2-3/}
}