"Appearance of magnetic long range order in the spin ladder compound LaCuO_2.5" J. Akimitsu, H. Okajima, A. Yamashita, K. Ishii, T. Yokoo, R. Kadono, N. Kobayashi, Z. Hiroi, M. Takano, and K. Nagamine, Hyperfine Interactions 104, 43-48 (1997). 引用先3