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:One can attempt to relate the jet energy to the jet scale via the Rhines relation, calculated as in Smith et al. (2002) as the integral of the putative 5 spectrum (see, e.g., Chekhlov et al. 1996; Smith et al. 2002)
1 2 U jet 2 a 2kjet 4, 3.8
where a 0.1.
Category: