Shaping Collaborative Ecosystems for TomorrowIgor Perko, Raul Espejo, Alfonso Reyes · First published 2025Open the Tome
World Organization of Systems and Cybernetics 18. Congress-WOSC2021 : Systems Approach and CyberneticsIgor Perko, Raul Espejo, Vladimir Lepskiy, Dmitry A. Novikov · First published 2022Open the Tome
Cybernetics and SystemsSergio Barile, Raul Espejo, Igor Perko, Marialuisa Saviano · First published 2018Open the Tome
Gozd in gozdarstvo v Bleiweisovih novicah 1843-1902Franc Perko, Igor Grdina · First published 2013Open the Tome
