1. New Solar Tracker, Sol.;Poulek;Energy Mater. Sol. Cells,1998
2. K.R. McIntosh et al., The impact of rear illumination on bifacial solar cells with floating junction passivation, Proceedings of the second World Conference on Photovoltaic Solar Energy Conversion, Wienna, 6–10 July 1998, pp. 1515–1518.
3. R.E. Thomas et al., Seasonal Benefits of using bifacial PV modules and 360° solar trackers in high northern lattitudes. Proceedings of the 15th European Photovoltaic Solar Energy Conference, Amsterdam, 11–15 April 1994, pp. 829–832.