Boyana Film image Samozhertva September 18, 1981 Theatrical Boyana Film English title: Self-Sacrifice StudioBoyana Film DistributorBoyana Film, Natfiz Credits Directing Director Velislav Kazakov Writing Writer Slav Bakalov Animation Animator Velislav Kazakov ← Den Kato Gluharche Trimata Glupatzi - Ribari →