Urikova, O.     Managing complex business services in heterogeneous e-business ecosystems – aspect-based research assessment [Текст] / О. Urikova, I. Ivanochko, N. Kryvinska, P. Zinterhof, C. Strauss // Procedia Computer Science : journal. — Elsevier, 2012. — The 3rd International conference on ambient systems, networks and technologies (ANT-2012), August 27-29, 2012, Niagara Falls, Ontario, Canada. — P. 128-135.