Kevser GÖK, Kemal EROL, Gizem CENGİZ, and Salih ÖZGÖÇMEN, “Comparison of Level of Fatigue and Disease Correlates in Patients With Rheumatoid Arthritis and Systemic Sclerosis”, Archives of Rheumatology, vol. 33, no. 3, pp. 316–321, Sep. 2018.