TY - JOUR TI - Conceptualizing the circular economy: An analysis of 114 definitions PY - 2017 AU - Julian Kirchherr AU - Denise Reike AU - Marko Hekkert T2 - Resources, Conservation and Recycling LK - http://www.sciencedirect.com/science/article/pii/S0921344917302835 DO - 10.1016/j.resconrec.2017.09.005 ER -