Kirchherr, Julian, et al. “Conceptualizing the Circular Economy: An Analysis of 114 Definitions”. Resources, Conservation and Recycling, vol. 127, 2017, pp. 221-32, https://doi.org/10.1016/j.resconrec.2017.09.005.
Kirchherr, J., Reike, D., & Hekkert, M. (2017). Conceptualizing the circular economy: An analysis of 114 definitions. Resources, Conservation and Recycling, 127, 221-232. https://doi.org/10.1016/j.resconrec.2017.09.005
Kirchherr J, Reike D, Hekkert M. Conceptualizing the circular economy: An analysis of 114 definitions. Resources, Conservation and Recycling. 2017;127:221-32.