LIŠKA, Martin et al. Simulation of Synergy Effect Creation by Photovoltaic Power Plant Operation within the Balance Group of Distribution System Operator. In Advances in Power and Energy Systems : Proceedings of the 12th WSEAS International Conference on Electric Power Systems, High Voltages, Electric Machines (POWER '12). Prague, Czech Republic, September 24-26, 2012 : WSEAS Press, 2012, s.53-56. ISBN 978-1-61804-128-9. E*855/06/2012 - C1