Columbia subject headings:
International and municipal law--Congresses.
International and municipal law--European Union countries--Congresses.
Soft law--France--Congresses.
Harvard subject headings:
Conflict of laws--Congresses.
International and municipal law--Congresses.
International and municipal law--European Union countries--Congresses.
International and municipal law--France--Congresses.
Soft law--Congresses.
Soft law--European Union countries--Congresses.
Soft law--France--Congresses.
Princeton subject headings: