@article{GDZPPN002106868, title = {Everywhere non reduced moduli spaces.}, journal = {Inventiones mathematicae}, volume = {96}, year = {1989}, pages = {293-310}, zbl = {0701.14039}, url = {http://dml.mathdoc.fr/item/GDZPPN002106868} }
Catanese, F. Everywhere non reduced moduli spaces.. Inventiones mathematicae, Tome 96 (1989) pp. 293-310. http://gdmltest.u-ga.fr/item/GDZPPN002106868/