BjornAStrandesenM (2011) The cradle to cradle concept – is it always sustainable? In: Poster session presented at The Life Cycle Management (LCM) Conference, Towards life cycle sustainability management, Berlin, 28–31August. Available at: http://orbit.dtu.dk/files/6443333/Bjoern-The_Cradle_to_Cradle_concept-773_ax%5B1%5D.pdf (accessed 2 December 2015).
2.
BraungartMMcDonoughW (2009) Die nächste industrielle Revolution. [The cradle to cradle community]. EVA Verlag, Hamburg.