@article{JRAM_1979__0307_0308_152118,
     author = {R. Perko},
     title = {Eine {Verallgemeinerung} der {Riccatischen} {Differentialgleichung} in {K\"orpern} der {Charakteristik} p = 2.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {257--263},
     publisher = {mathdoc},
     volume = {0307_0308},
     year = {1979},
     zbl = {0399.34057},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1979__0307_0308_152118/}
}