1. International Technology Roadmap for Photovoltaic (ITRPV) 2022 Result,2023
2. Average london fix Price of Silver 1975-2022,2023
3. Copper Prices – Historical Chart Data,2023
4. Implementing narrow front silver gridlines through ink jet machine for high quality contacts to silicon solar cells;Ebong,2011
5. Metallization of N-type silicon solar cells using fine line printing techniques;Kalio;Energy Proc.,2011