@article{JRAM_1965__218_150683,
     author = {Martin Kneser},
     title = {Starke {Approximation} in algebraischen {Gruppen.} {I.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {190--203},
     publisher = {mathdoc},
     volume = {218},
     year = {1965},
     zbl = {0143.04701},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1965__218_150683/}
}