http://qiserver.ugr.es/cod/1537395.cif
http://qiserver.ugr.es/cod/9009796.cif
http://qiserver.ugr.es/cod/9012316.cif
http://qiserver.ugr.es/cod/9012317.cif
http://qiserver.ugr.es/cod/9012318.cif
http://qiserver.ugr.es/cod/9012319.cif