Informazzjoni minn organizzazzjoni tal-arti (Verifikat minn Operabase)
Medeamaterial by Dusapin, Tne 21 Mej 2012, Minn (2012/2012), Immexxi minn Philipp Grigorian,, Surmast Direttur Maxim Emelyanychev, Perm Tchaikovsky Opera and Ballet Theatre, Perm, Russia