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:Such multiorientation representations can be made using various techniques, such as invertible orientation scores (which is obtained via a coherent state transform) [3,30,11,36, 40,6], continuous wavelet transforms [28,30,61,11], orientation lifts [65,14], or orientation channel representations [35].
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