Digitalisation and circular economy: forestry and forestry based industry implications [Proceedings of Scientific Papers. 12th International Scientific Conference WoodEMA, 11. - 13. 9. 2019, Varna, Bulgaria]. 1. vyd. Zagreb : Union of Scientists of Bulgaria, WoodEMA, 2019. 350 s. Available on Internet: <http://www.woodema.org/proceedings/WoodEMA_2019_Proceedings.pdf#page=271> ISBN 978-954-397-042-1.