"artt. 10 d.i.p. e 31": we are talking about two articles (artt. being the plural abbreviation) of the same Regulation, but the "d.i.p." bit only refers to article 10. I was wondering if they might be saying that article 10 had already been discussed (Discusso In Precedenza?) and they were just referring back to it. This is little more than a guess, based on noting that the acronym appears to apply to one article but not the other (if "diritto internazionale privato", wouldn't that apply to both articles?).