Assisting XML Schema Evolution that Preserves Validity.

Béatrice Bouchou Denio Duarte Assisting XML Schema Evolution that Preserves Validity. 270-284 2007 conf/sbbd/2007 SBBD http://www.lbd.dcc.ufmg.br:8080/colecoes/sbbd/2007/SBBD18.pdf db/conf/sbbd/sbbd2007.html#BouchouD07