1. Proc. 18th Photovoltaic Specialists' Conf.;DeMoulin,1985
2. Physical operation of back-surface-field silicon solar cells
3. Proc. 9th Photovoltaic Specialists' Conf.;Mandelkorn,1972
4. Proc. 17th Photovoltaic Specialists' Conf.;Gale,1984
5. Proc. 14th Photovoltaic Specialists' Conf.;Fan,1980