Superconductivity in fluoride-arsenide SrLaxFeAsF compoundsXiyu Zhu, Fei Han, Peng Cheng, Gang Mu, Bing Shen, Lei Fang and Hai-Hu WenEPL, 85 1 (2009) 17011DOI: https://doi.org/10.1209/0295-5075/85/17011