Peptenatu, D., R. Pintilii, C. Draghici, and A. Peptenatu. “The Efficiency of Polycentric Development Strategies in the Context of Economic Crisis. Case Study - the Development of Southwest Oltenia Region - Romania”. Bulletin of Geography. Socio-Economic Series, no. 17, June 2012, pp. 117-25, doi:10.1515/v10089-012-0012-6.