Dale Miller Elaine Pimentel Using Linear Logic to Reason about Sequent Systems. 2-23 2002 conf/tableaux/2002 TABLEAUX http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2381&spage=0002 db/conf/tableaux/tableaux2002.html#MillerP02