1. News available online, http://news.panasonic.com/press/news/official.data/data.dir/2014/02/en140213-3/en140213-3.html.
2. D. Fox, in an article “Power Struggle”. Available from: http://www.urbanfox.tv/articles/batteries/b1batteries.html.
3. K. Young, T. Ouchi, M.A. Fetcenko, US Patent 7,344,677, 2008.
4. M.A. Fetcenko, K. Young, S.R. Ovshinsky, T. Ouchi, US Patent 7,393,500, 2008.