Elisa Bertino Elena Camossi Giovanna Guerrini Access to Multigranular Temporal Objects. 320-333 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3055&spage=320 2004 conf/fqas/2004 FQAS db/conf/fqas/fqas2004.html#BertinoCG04