http://qiserver.ugr.es/cod/9009954.cif
http://qiserver.ugr.es/cod/9012655.cif
http://qiserver.ugr.es/cod/9012657.cif
http://qiserver.ugr.es/cod/9012658.cif
http://qiserver.ugr.es/cod/9012659.cif
http://qiserver.ugr.es/cod/9014132.cif
http://qiserver.ugr.es/cod/9014766.cif
http://qiserver.ugr.es/cod/9017419.cif