• Varache, R.; Gueunier-Farret, M.-E.; Halliop, B.; Kherani, N. P.; Kleider, J.-P.: Influence of the undoped a-Si:H buffer layer on a-Si:H/c-Si heterojunctions from planar conductance and lifetime measurements. In: Nowak, S. [Ed.] : 27th European Photovoltaic Solar Energy Conference and Exhibition ; Frankfurt, Main: EU PVSEC ; 24.9.2012-28.9.2012München: WIP, 2012. - ISBN 3-936338-28-0, p. 1439-1442