Partyn, H. O.     Metrics formation of effectiveness evaluation of outsourcing application in enterprise business activity [Текст] / H.O. Partyn, O.V. Diduch // Accounting and analytical support of the management system of an enterprise : collective monograph / Min. of education and science of Ukraine, Lviv Рolytechnic Nat. Univ., Min. of science and higher education of Poland, UMCS (Maria Curie-Sklodowska Univ. in Lublin) ; edited by: A. Zahorodniy, H. Ronek. — Lviv : Publishing House of Lviv Polytechnic, 2013. — P. 218-234.