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@article{MAN_1982__259_163649, author = {Klaus Wirthm\"uller}, title = {Deformations of {Fat} {Points} of {Boardman} {Type} 2,0.}, journal = {Mathematische Annalen}, pages = {519--540}, publisher = {mathdoc}, volume = {259}, year = {1982}, zbl = {0469.32009}, url = {http://geodesic.mathdoc.fr/item/MAN_1982__259_163649/} }
Klaus Wirthmüller. Deformations of Fat Points of Boardman Type 2,0.. Mathematische Annalen, Tome 259 (1982), pp. 519-540. http://geodesic.mathdoc.fr/item/MAN_1982__259_163649/