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:Besides, knowledge management (e.g. document management, group wikis and task management) and social intercourse models (e.g. the forum and public wall) are lately discussed and designed within the framework of CWE (MartínezCarreras et al., 2007; Pirkkalainen and Pawlowski, 2012).
Category: