1. P.N. Jong, US Patent 3,903,428, 1975.
2. G.J. Pack, US Patent 3,903,427, 1975.
3. J.H. Bultman, M.W. Brieko, A.R. Burgers, J.H. Hoornstra, A.C. Tip, A.W. Weeber, The 11th International Photovoltaic Science and Engineering Conference, Sapporo, Japan, September 20–24, 1999 (in this issue).
4. Theoretical analysis of the series resistance of a solar cell
5. Optimization of multi-layer front-contact grid patterns for solar cells