@article{10_4064_ap_58_3_259_266,
     author = {Zbigniew Jelonek},
     title = {The set of points at which a polynomial map is not proper},
     journal = {Annales Polonici Mathematici},
     pages = {259--266},
     publisher = {mathdoc},
     volume = {58},
     number = {3},
     year = {1993},
     doi = {10.4064/ap-58-3-259-266},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-58-3-259-266/}
}