1. Electronics Industry Market Research and Knowledge Network, http://www.electronics.ca/presscenter/articles/1242/1/Global-Flexible-Printed-Circuit-Boards-Market-to-Exceed-16-Billion-by-2015/Page1.html (accessed 01.03.14).
2. Printed Circuits Handbook;Coombs,2002
3. Jewelrymaking Through History: An Encyclopedia;Hesse,2007
4. Printed circuit board industry