@article{10_1090_S1079_6762_99_00072_4,
     author = {Reichstein, Z. and Youssin, B.},
     title = {Parusinski{\textquoteright}s {{\textquotedblleft}Key} {Lemma{\textquotedblright}} via algebraic geometry},
     journal = {Electronic research announcements of the American Mathematical Society},
     pages = {136--145},
     year = {1999},
     volume = {05},
     doi = {10.1090/S1079-6762-99-00072-4},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S1079-6762-99-00072-4/}
}