@article{MZ_1931__33_168285,
     author = {V? Jarnik},
     title = {\"Uber die simultanen diophantischen {Approximationen}},
     journal = {Mathematische Zeitschrift},
     pages = {505--543},
     publisher = {mathdoc},
     volume = {33},
     year = {1931},
     zbl = {57.1370.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1931__33_168285/}
}