The Knowledge- Based Opole Tourism Cluster (OKTW) as a Network Tool for Organizing the Space and Flow in the Opole Region. - Kazimierz Perechuda; Daria Holodnik (GeNeMe, 2012)

Route Ontology in Value Recognition of Self-tour Planning Application. - Daria Holodnik; Kazimierz Perechuda (ICCCI (2), 2019)