Lehtonen, Tero, and Anssi Salonen. “An Empirical Investigation of Procurement Trends and Partnership Management in FM Services – A Finnish Survey”. International Journal of Strategic Property Management 10, no. 2 (October 18, 2010): 65-78. Accessed November 25, 2024. https://jbem.vgtu.lt/index.php/IJSPM/article/view/7232.