@article{GDZPPN00220875X,
title = {Normal degenerations of the complex projective plane.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {416},
year = {1991},
pages = {89-118},
zbl = {0719.14023},
url = {http://dml.mathdoc.fr/item/GDZPPN00220875X}
}
Manetti, Marco. Normal degenerations of the complex projective plane.. Journal für die reine und angewandte Mathematik, Tome 416 (1991) pp. 89-118. http://gdmltest.u-ga.fr/item/GDZPPN00220875X/