Gottlieb, A. B., C. Ryan, R. Kim, A. Alam, S. Munjal, and L. Kircik. “XP-23829, a Novel Fumaric Acid Ester, Is Efficacious in Reducing Psoriatic Lesions: Results from a Phase 2 Randomized Controlled Study”. SKIN The Journal of Cutaneous Medicine, vol. 1, no. 3.1, Oct. 2017, p. s33, doi:10.25251/skin.1.supp.32.