academic article

• Siponimod versus placebo in secondary progressive multiple sclerosis (EXPAND): a double-blind, randomised, phase 3 study..  Lancet.  391:1263-1273. 2018
• Placebo-controlled phase 3 study of oral BG-12 or glatiramer in multiple sclerosis..  The New England journal of medicine.  367:1087-1097. 2012