Assurance of System Consistency During Independent Creation of UML Diagrams. - Lukasz Fryz; Leszek Kotulski (DepCoS-RELCOMEX, 2007)

Conjugated Graph Grammars as a Mean to Assure Consistency of Systems of Conjugated Graphs. - Leszek Kotulski; Lukasz Fryz (DepCoS-RELCOMEX, 2008)