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The reference Hoyer et al. (2011) is missing from the following locations in this article: Section 2 – Background; and in the definitions of Disassembly (Section 2.1), Mechanical conditioning (Section 2.2), Pyrometallurgical conditioning (Section 2.3) and Hydrometallurgical conditioning (Section 2.4).
In Figure 1, ‘adopted from Kwade, 2010’ should be read as ‘adopted from Hoyer et al., 2011’.