Borović, S., K. Urumović, J. Terzić, and I. Pavičić. “Examining Thermal Conductivities of Shallow Subsurface Materials for Ground Source Heat Pump Utilization in the Pannonian Part of Croatia”. Rudarsko-geološko-Naftni Zbornik, vol. 33, no. 5, Nov. 2018, doi:10.17794/rgn.2018.5.3.