1] prof Velimir Stefanovic Experimental and numerical investigation of a solar dish collector with spiral absorber" - 13th International Conference on Accomplishments in Mechanical and Industrial Engineering, 01.02.2017.
(https://ekonferencije.com/sr1/rad/experimental-and-numerical-inv/4775)

2] prof Velimir Stefanovic Development of mathematical model of offset type solar parabolic concentrating system" - 12. Međunarodna konferencija o dostignućima elektrotehnike, mašinstva i informatike, 26.02.2015.
(https://ekonferencije.com/sr1/rad/development-of-mathematical-mo/2914)

3] prof Velimir Stefanovic Wind Energy Potentials of Vlasina Region" - DEMI 2013, 16.02.2013.
(https://ekonferencije.com/sr1/rad/wind-energy-potentials-of-vlas/2015)

4] prof Velimir Stefanovic DYNAMICAL SIMULATION OF A SOLAR-HEAT PUMP SYSTEM FOR ON-SITE ELECTRICITY PRODUCTION " - DEMI 2013, 15.02.2013.
(https://ekonferencije.com/sr1/rad/dynamical-simulation-of-a-sola/2002)

5] prof Velimir Stefanovic A REVIEW OF TECHNOLOGIES AND STRATEGIES TOWARDS NET ZERO ENERGY BUILDINGS THROUGH EXAMPLES ALL OF THE WORLD" - DEMI 2013, 15.02.2013.
(https://ekonferencije.com/sr1/rad/a-review-of-technologies-and-s/1995)