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:The potential tectonic control reported by Finnegan et al. (2008) for the eastern Himalaya has also been suggested for the Eastern Cordillera and the upper Beni region (Safran et al. 2005).
Category: