@article{10_4064_ap_62_2_173_176,
     author = {Arno van den Essen},
     title = {A counterexample to a conjecture of {Dru\.zkowski} and {Rusek}},
     journal = {Annales Polonici Mathematici},
     pages = {173--176},
     publisher = {mathdoc},
     volume = {62},
     number = {2},
     year = {1995},
     doi = {10.4064/ap-62-2-173-176},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-62-2-173-176/}
}