31In those circumstances, it is for the referring court to ascertain, as stated in paragraph 25 above, whether books published in paper form and books published on other physical supports are goods which are liable to be regarded by the average consumer as similar. For that purpose, it will have to assess whether those books have similar characteristics and meet the same needs, using the criterion of whether their use is comparable, in order to ascertain whether or not the differences between them have a significant or tangible influence on the average consumer’s decision to choose one or other of those books.
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