Valade, Dominique, Frédéric Fontenelle, Caroline Roos, Céline Rousseau-Salvador, Anne Ducros, and Stéphane Rusinek. “Emotional Status, Perceived Control of Pain, and Pain Coping Strategies in Episodic and Chronic Cluster Headache”. Europe’s Journal of Psychology 8, no. 3 (August 29, 2012): 461-474. Accessed March 28, 2024. https://ejop.psychopen.eu/index.php/ejop/article/view/308.