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:In this study, the users‚Äö√Ñ√¥ perception of quality shows a much stronger impact on intention than previous studies on IT use have indicated (Beyah et al., 2003; Cheong and Park, 2005; Shin, 2008).
Category: