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:This strain ratio is consistent with experimental data [24] and, for small deformations, automatically enforces incompressibility of the intracellular volume (dV~padx; dV~differential volume, a = cell radius, dx = differential length) for each differential slice of the OHC (i.
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