1. On the Segre upper bound of the regularity for fat points in P4, I;Ballico;Int. J. Pure Appl. Math.,2015
2. On the Segre upper bound of the regularity for fat points in P4, II;Ballico;Int. J. Pure Appl. Math.,2015
3. On Segre's bound for fat points in Pn;Ballico;J. Pure Appl. Algebra,2016
4. Segre's bound and the case of n+2 fat points of Pn;Benedetti;Commun. Algebra,2012