mathieu stumpf guntz, 01/12/2017 03:00:
Actually, as far as I know, CC-by-sa-3.0-undeed states
/suis generis/ rights
I don't know what's -undeed, but 3.0-it and 4.0 do, which is for
instance why ISTAT data can be imported in Wikidata despite the less
than ideal license (CC-BY-3.0-it).