http://qiserver.ugr.es/cod/1511740.cif
http://qiserver.ugr.es/cod/1529145.cif
http://qiserver.ugr.es/cod/1529146.cif
http://qiserver.ugr.es/cod/1529177.cif
http://qiserver.ugr.es/cod/1530158.cif
http://qiserver.ugr.es/cod/1537009.cif
http://qiserver.ugr.es/cod/1542119.cif