@article{JRAM_1971__248_151106,
     author = {K. Kiyek},
     title = {Zur {Konstantenreduktion} projektiver {Schemata.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {12--27},
     publisher = {mathdoc},
     volume = {248},
     year = {1971},
     zbl = {0214.48202},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1971__248_151106/}
}