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(subgeothermal, groundwater, heat pump, energy efficiency, eastern Serbia)
University of Belgrade, Djusina 7, Belgrade, Serbia,E-mail: zstev@eunet.rs 2 Faculty of Mechanical Engineering, University of Belgrade, Kraljice Marije 16, Belgrade, Serbia.3 Faculty of Chemistry and Chemical Engineering

mostlyZORAN STEVANOVIĆ et al.134Fig. 2. Hydrogeological sketch map of eastern Serbia and main groundwater sources (based on Hydrogeological digital mapof Serbia, Stevanovic & Jemcov 1995).during the Tithonian, Valanginian, Hauterivian

EU countries is spent in buildings. In Serbia evenmore, almost 2/3 of the energy is utilized for domestic heating, which is quite logical given that more than50 % of buildings in Serbia were built before 1970.when application




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(jurassic, north-eastern Serbia, north-western Bulgaria, correlations, lithostratigraphic units)
near D. Milanovac and Novo Korito (Serbia) and in their prolongation in NW Bulgariainto the Gornobelotintsi palaeograben. Very important are the correlation in the region of Vrška Čuka (Serbia)and Vrashka Chuka (Bulgaria) – Rabisha

11000Belgrade, Serbia. E-mails: rabrenovic@verat.net; malesevic.nesa@gmail.com3 Department of Palaeontology, Faculty of Mining and Geology, University of Belgrade, Kamenička 6, P. O. Box 162,11000 Belgrade, Serbia. E-mail: vrad@eunet

eastern Serbia and western Bulgaria enterthe following large palaeogeographic units (TCHOUMATCHENCO et al. 2006a, 2008) (from west to east): theGetic (Dragoman Jurassic Pale horst in Bulgaria andKarpatikum in Serbia), divided