@mastersthesis{akerman2016development,
  title = {Development of Circular Economy Core Indicators for Natural Resources: Analysis of existing sustainability indicators as a baseline for developing circular economy indicators}
  author = {Åkerman, Elin},
  url = {http://www.diva-portal.org/smash/get/diva2:897309/FULLTEXT01.pdf},
  year = {2016}
}