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:With respect to the contradicting results of other studies (Licausi et al., 2011; Weits et al., 2014), we propose that the air humidity during the recovery
period is a crucial factor for the length of survival of submergence in darkness, which was shown here for treatment of the different genotypes…
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