Götterdämmerung : stage-festival drama for three days and a preliminary evening. Prelude ; Act one / Richard Wagner ; a Unitel production ; produced at the Bayreuth Festspielhaus ; production Patrice Chéreau ; conductor Pierre Boulez ; video director Brian Large [videozáznam].    [Baarn] :  Philips,  1991 . 1 videokazeta (114 min.)