Geodesic
Nonflat deformations of modules and isolated singularities.
Mathematische Annalen, Tome 287 (1990) no. 1, pp. 413-428.

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Mots-clés : isolated singularities, deformation functor, deformations of the punctured spectrum 
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     author = {Hartwig von Essen},
     title = {Nonflat deformations of modules and isolated singularities.},
     journal = {Mathematische Annalen},
     pages = {413--428},
     publisher = {mathdoc},
     volume = {287},
     number = {1},
     year = {1990},
     zbl = {0707.14002},
     url = {http://geodesic.mathdoc.fr/item/MAN_1990__287_1_164695/}
}
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Hartwig von Essen. Nonflat deformations of modules and isolated singularities.. Mathematische Annalen, Tome 287 (1990) no. 1, pp. 413-428. http://geodesic.mathdoc.fr/item/MAN_1990__287_1_164695/