Twelve "historical minority languages" (''minoranze linguistiche storiche'') are formally recognised: Albanian, Catalan, German, Greek, Slovene, Croatian, French, Franco-Provençal, Friulian, Ladin, Occitan and Sardinian. Four of these also enjoy a co-official status in their respective region: French in the Aosta Valley; German in South Tyrol, and Ladin as well in some parts of the same province and in parts of the neighbouring Trentino; and Slovene in the provinces of Trieste, Gorizia and Udine. A number of other Ethnologue, ISO and UNESCO languages are not recognised by Italian law. Like France, Italy has signed the European Charter for Regional or Minority Languages, but has not ratified it.