http://qiserver.ugr.es/cod/1004034.cif
http://qiserver.ugr.es/cod/1004060.cif
http://qiserver.ugr.es/cod/1527245.cif
http://qiserver.ugr.es/cod/1527246.cif
http://qiserver.ugr.es/cod/1527247.cif
http://qiserver.ugr.es/cod/1527383.cif
http://qiserver.ugr.es/cod/1536908.cif
http://qiserver.ugr.es/cod/9012784.cif