@article{10_4064_cm122_2_3,
     author = {Norihiro Wada},
     title = {Some results on the kernels of higher derivations on $k[x, y]$ and $k(x, y)$},
     journal = {Colloquium Mathematicum},
     pages = {185--189},
     publisher = {mathdoc},
     volume = {122},
     number = {2},
     year = {2011},
     doi = {10.4064/cm122-2-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm122-2-3/}
}