PHYSICA C, vol. 341, page. 1563 - 1564, 2000-11
PHYSICAL REVIEW B, vol. 59, no. 22, page. 14639 - 14643, 1999-06-01
SOLID STATE COMMUNICATIONS, vol. 105, no. 1, page. 25 - 29, 1998-01
PHYSICA C, vol. 355, no. 1-2, page. 97 - 102, 2001-06-01
PHYSICA B, vol. 284, page. 1844 - 1845, 2000-07
PHYSICA B, vol. 284, page. 606 - 607, 2000-07
APPLIED PHYSICS LETTERS, vol. 94, no. 4, 2009-01-26