Persistent Currents in Normal Metal Rings
A. C. Bleszynski-Jayich, W. E. Shanks, B. Peaudecerf, E. Ginossar, F. von Oppen, L. Glazman, J. G. E. Harris
Science 9 October 2009:
Vol. 326. no. 5950, pp. 272 - 275