http://qiserver.ugr.es/cod/1523230.cif
http://qiserver.ugr.es/cod/1525811.cif
http://qiserver.ugr.es/cod/1529624.cif
http://qiserver.ugr.es/cod/1530360.cif
http://qiserver.ugr.es/cod/1530728.cif
http://qiserver.ugr.es/cod/1541028.cif
http://qiserver.ugr.es/cod/1541615.cif
http://qiserver.ugr.es/cod/1542131.cif