http://qiserver.ugr.es/cod/1517796.cif
http://qiserver.ugr.es/cod/9009614.cif
http://qiserver.ugr.es/cod/9009615.cif
http://qiserver.ugr.es/cod/9009616.cif
http://qiserver.ugr.es/cod/9011958.cif
http://qiserver.ugr.es/cod/9011959.cif
http://qiserver.ugr.es/cod/9017833.cif