http://authorities.loc.gov 14/08/12: (rem.; d.n.)

http://en.wikipedia.org/wiki/Riccardo_Muti 14/08/12: (maestro italiano; d.n.)

http://catalogue.bnf.fr/ 14/08/12: (d.n.; n.c.)

http://catalogo.bnportugal.pt/ 14/08/12