@article{10_4064_fm_135_1_55_59,
     author = {Chris Freiling and Dan Rinne},
     title = {An approximate analog of a theorem of {Khintchine}},
     journal = {Fundamenta Mathematicae},
     pages = {55--59},
     publisher = {mathdoc},
     volume = {135},
     number = {1},
     year = {1990},
     doi = {10.4064/fm-135-1-55-59},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-135-1-55-59/}
}