1. V. Selvamanickam, Y. Xie, US DOE Superconductivity for Electric Systems Annual Peer Review, Arlington, VA, 2008.
2. T. Holesinger, L. Civale, US DOE Superconductivity for Electric Systems Annual Peer Review, Arlington, VA, 2006.
3. M. Nisenoff, The 1999 International Workshop on Superconductivity, Hawaii, 1999, pp. 2–5.
4. M. Ogata, K. Nagashima, M. Iwamatsu, A. Inoue, Y. Miyazaki, Maglev 2006, Dresden, Germany, 2006, pp. 275–280.