• Monograin layers and membranes for photovoltaicMellikov, Enn; Altosaar, Mare; Varema, Tiit; Deppe, M.; Wirts, C.; Deppe, J.; Hiesgen, Renate; Meissner, Dieter25th IEEE Photovoltaic Specialists Conference, Washington, 19961996 / p. 212 https://www.researchgate.net/publication/224197383_Monograin_layers_and_membranes_for_photovoltaics