Ontology Versioning and Change Detection on the Web. - Michel C. A. Klein; Dieter Fensel; Atanas Kiryakov; Damyan Ognyanov (EKAW, 2002)

Tracking Changes in RDF(S) Repositories. - Damyan Ognyanov; Atanas Kiryakov (EKAW, 2002)

Finding and Characterizing Changes in Ontologies. - Michel C. A. Klein; Atanas Kiryakov; Damyan Ognyanov; Dieter Fensel (ER, 2002)

OWLIM - A Pragmatic Semantic Repository for OWL. - Atanas Kiryakov; Damyan Ognyanov; Dimitar Manov (WISE Workshops, 2005)

WSMO Studio - an Integrated Service Environment for WSMO. - Marin Dimitrov; Alex Simov; Vassil Momtchev; Damyan Ognyanov (WIW, 2005)

FactForge: A fast track to the Web of data. - Barry Bishop; Atanas Kiryakov; Damyan Ognyanov; Ivan Peikov; Zdravko Tashev; Ruslan Velkov (Semantic Web, 2011)