According to the Romanian Law on Copyright and Neighboring Rights: Law no. 8/1996 of March 14, 1996Full text
Chapter 3. Article 9.
The following shall not benefit from the legal protection accorded to copyright:
(a) the ideas, theories, concepts, discoveries and inventions contained in a work, whatever the manner of the adoption, writing, explanation or expression thereof;
(b) official texts of a political, legislative, administrative or judicial nature, and official translations thereof;
(c) official symbols of the State, public authorities and organizations, such as armorial bearings, seals, flags, emblems, shields, badges and medals;
(d) means of payment;
(e) news and press information;
(f) simple facts and data.
Chapter 85, paragraph (2)
The following are exempt of the legal protection regarding copyright, photographs of letters, acts, documents of any kind, technical drawings and other similar drawings.
Therefore this is assumed to be in the public domain worldwide.