@article{10_4064_aa_16_1_23_40,
     author = {Charles Osgood},
     title = {A method in diophantine approximation {(IV)}},
     journal = {Acta Arithmetica},
     pages = {23--40},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {1969},
     doi = {10.4064/aa-16-1-23-40},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-16-1-23-40/}
}