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 two most recent articles are those of Shelomi [8], an entomologist who also reported on a case of photo manipulation of presumed springtail (Collembola: Arthropoda) infections, and Lyons [9], a veterinarian who presented 3 case histories.
Category: