Martin Doerr Dimitris Plexousakis Chryssoyla Bekiari A Metamodel for Part - Whole Relationships for Reasoning on Missing Parts and Reconstruction. 412-425 2001 conf/er/2001 ER http://link.springer.de/link/service/series/0558/bibs/2224/22240412.htm db/conf/er/er2001.html#DoerrPB01