A. K. Angelov, G. Vasilev, A. Yordanova, E. Ivanova-Todorova, D. Kyurkchiev, and M. Ivanova, “Elevated serum levels of TNF-α and IL-17 in psoriatic and rheumatoid arthritis”, Rheumatol Bul, vol. 31, no. 1, pp. 23–36, May 2023, doi: 10.35465/31.1.2023.pp23-36.