1975. “Sissi En Enfer (Nouveau Théâtre)”. https://www.amazon.fr/Sissi-en-enfer-Nouveau-th%C3%A9%C3%A2tre/dp/B0014KOFUQ/ref=sr_1_9?s=books&ie=UTF8&qid=1537435722&sr=1-9&refinements=p_27%3AJean-Bernard+Moraly. Purchase link