Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:, 2002; Voinnet, 2009), with a subset of them also repressing translation (Aukerman and Sakai, 2003; Brodersen et al., 2008; Chen, 2004; Dugas and Bartel, 2008; Gandikota et al., 2007; Lanet et al., 2009).
Category: