Mapping Data Driven and Upper Level Ontology. - Mariana Damova; Svetoslav Petrov; Kiril Ivanov Simov (AIMSA, 2010)

Mapping the central LOD ontologies to PROTON upper-level ontology. - Mariana Damova; Atanas Kiryakov; Kiril Ivanov Simov; Svetoslav Petrov (OM, 2010)

Large-scale Reasoning with a Complex Cultural Heritage Ontology (CIDOC CRM). - Vladimir Alexiev; Dimitar Manov; Jana Parvanova; Svetoslav Petrov (CRMEX@TPDL, 2013)