Maciej Wesolowski (2017). AN ANALYSIS OF ELECTRICITY GAINS FROM HORIZONTAL POLYCRYSTALLINE AND VERTICAL MONOCRYSTALLINE PHOTOVOLTAIC INSTALLATIONS UNDER THE REAL-WORLD CONDITIONS OF NORTH-EASTERN POLAND. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Energy and Clean Technologies, 603-610. https://doi.org/10.5593/sgem2017h/43/s29.076