http://qiserver.ugr.es/cod/1008034.cif
http://qiserver.ugr.es/cod/1536161.cif
http://qiserver.ugr.es/cod/1537783.cif
http://qiserver.ugr.es/cod/1537786.cif
http://qiserver.ugr.es/cod/1538655.cif
http://qiserver.ugr.es/cod/9012125.cif