@article{GDZPPN001260987, title = {Parabolicity of second order differential equations in Hubert space.}, journal = {Semigroup forum}, volume = {43}, year = {1991}, pages = {303-312}, zbl = {0743.47038}, url = {http://dml.mathdoc.fr/item/GDZPPN001260987} }
Favini, A. Parabolicity of second order differential equations in Hubert space.. Semigroup forum, Tome 43 (1991) pp. 303-312. http://gdmltest.u-ga.fr/item/GDZPPN001260987/