Fujihisa, Hiroshi; Akahama, Yuichi; Kawamura, Haruki; Ohishi, Yasuo; Shimomura, Osamu; Yamawaki, Hiroshi; Sakashita, Mami; Gotoh, Yoshito; Takeya, Satoshi; Honda, Kazumasa . (2006). Cluster Structure of the Epsilon Phase of Solid Oxygen. Physical Review Letters, 97(8), 085503–.
doi:10.1103/PhysRevLett.97.085503