Bogataj, Miloš, Zdravko Kravanja, and Zorka Novak Pintarič , eds. 2018. Conference Proceedings 1st International Conference on Technologies & Business Models for Circular Economy, September, 5th - 7th, 2018, Portorož, Slovenia. Vol. tbmCE 1. Tehnologije in Poslovni Modeli Za krožno Gospodarstvo. Univerzitetna založba Univerze v Mariboru. https://press.um.si/index.php/ump/catalog/book/367.