@article{GDZPPN00223050X,
title = {Betti numbers for the Hilbert function strata of the punctual Hilbert scheme in two variables.},
journal = {Manuscripta mathematica},
volume = {67},
year = {1990},
pages = {253-260},
zbl = {0714.14004},
url = {http://dml.mathdoc.fr/item/GDZPPN00223050X}
}
Göttsche, Lothar. Betti numbers for the Hilbert function strata of the punctual Hilbert scheme in two variables.. Manuscripta mathematica, Tome 67 (1990) pp. 253-260. http://gdmltest.u-ga.fr/item/GDZPPN00223050X/