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:“Grounded theory is a paradigm for discovery of what is going on within a particular arena” (Glaser, 2005, p. 145) and is particularly useful for studying social phenomena about which little is known (Beck, 2004; Wuest, 2007).
Category: