Patsch, S. M. "The Countess Cathleen": The Irish Legend of Sin, Redemption, and Vicarious Self-Sacrifice as Interpreted by William Butler Yeats, Werner Egk, and Oskar Kokoschka: Sylvia M. Patsch. Literature and the other arts.(1981).

Patsch, Sylvia M. ""The Countess Cathleen": The Irish Legend of Sin, Redemption, and Vicarious Self-Sacrifice as Interpreted by William Butler Yeats, Werner Egk, and Oskar Kokoschka: Sylvia M. Patsch." Literature and the Other Arts.(1981) .

Patsch, Sylvia M. ""The Countess Cathleen": The Irish Legend of Sin, Redemption, and Vicarious Self-Sacrifice as Interpreted by William Butler Yeats, Werner Egk, and Oskar Kokoschka: Sylvia M. Patsch." Literature and the Other Arts.(1981), .