@article{10_4064_fm183_1_4,
     author = {B. Balcar and F. Hern\'andez-Hern\'andez and M. Hru\v{s}\'ak},
     title = {Combinatorics of dense subsets of the rationals},
     journal = {Fundamenta Mathematicae},
     pages = {59--80},
     publisher = {mathdoc},
     volume = {183},
     number = {1},
     year = {2004},
     doi = {10.4064/fm183-1-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm183-1-4/}
}