@article{10_4064_cm_83_2_267_269,
     author = {Janusz Zieli\'nski},
     title = {On the algebra of constants of polynomial derivations in two variables},
     journal = {Colloquium Mathematicum},
     pages = {267--269},
     publisher = {mathdoc},
     volume = {83},
     number = {2},
     year = {2000},
     doi = {10.4064/cm-83-2-267-269},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-83-2-267-269/}
}