@article{MS2_1987__60_167013,
     author = {Lisa Jacobsen},
     title = {Nearness of continued fractions.},
     journal = {Mathematica Scandinavica},
     pages = {129--147},
     year = {1987},
     volume = {60},
     zbl = {0611.40002},
     url = {http://geodesic.mathdoc.fr/item/MS2_1987__60_167013/}
}