SUPERCONDUCTOR SCIENCE & TECHNOLOGY, vol. 21, no. 10, page. 105021 - 105021, 2008-10
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, vol. 77, no. 10, page. 104717 - 104717, 2008-10
APPLIED PHYSICS LETTERS, vol. 91, no. 4, 2007-07-23