@article{IM_1984__76_143117,
     author = {K. Schmidt and L. van den Dries},
     title = {Bounds in the theory of polynomial rings over fields. {A} nonstandard approach.},
     journal = {Inventiones mathematicae},
     pages = {77--92},
     publisher = {mathdoc},
     volume = {76},
     year = {1984},
     zbl = {0539.13011},
     url = {http://geodesic.mathdoc.fr/item/IM_1984__76_143117/}
}