Superconductivity in the iron-based F-doped layered quaternary compound Nd[ OFx] FeAsZhi-An Ren, Jie Yang, Wei Lu, Wei Yi, Xiao-Li Shen, Zheng-Cai Li, Guang-Can Che, Xiao-Li Dong, Li-Ling Sun, Fang Zhou and Zhong-Xian ZhaoEPL, 82 5 (2008) 57002DOI: https://doi.org/10.1209/0295-5075/82/57002