1. Statistisk sentralbyrå Bygningsmassen [Online] Available:https://www.ssb.no/bygg-bolig-og-eiendom/bygg-og-anlegg/statistikk/bygningsmassen[Accessed: 10-Aug-2021].
2. S.Bjørberg A.LarsenandH.Øiseth Livssykluskostnader forbygninger RIF – Organisasjonen for rådgivere 3. utg 2007.
3. A Definition of Systems Thinking: A Systems Approach
4. What is systems thinking?;Monat J. P.;A review of selected literature plus recommendations, International Journal of Systems Science,2015
5. Applying Systems Thinking to Engineering and Design