Rehberger, P., P. Beckheinrich-Mrowka, U.-F. Haustein, and M. Sticherling. “Prostacyclin Analogue Iloprost Influences Endothelial Cell-Associated Soluble Adhesion Molecules and Growth Factors in Patients With Systemic Sclerosis: A Time Course Study of Serum Concentrations”. Acta Dermato-Venereologica, vol. 89, no. 3, Mar. 2009, pp. 245-9, doi:10.2340/00015555-0632.