Informazzjoni minn organizzazzjoni tal-arti (Verifikat minn Operabase)
The Malachite Casket by Batin, Ħad 09 Mar 2014, Minn (2013/2014), Immexxi minn Olga Enns,, Surmast Direttur Damir Maksutov, Perm Tchaikovsky Opera and Ballet Theatre, Perm, Russia