@article{MOMA_1978__86_177895,
     author = {Franz Langmayr},
     title = {Zur simultanen {Diophantischen} {Approximation.} {I.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {285--300},
     year = {1978},
     volume = {86},
     zbl = {0395.10041},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1978__86_177895/}
}