http://qiserver.ugr.es/cod/1508998.cif
http://qiserver.ugr.es/cod/1509175.cif
http://qiserver.ugr.es/cod/1522584.cif
http://qiserver.ugr.es/cod/1522787.cif
http://qiserver.ugr.es/cod/1523466.cif
http://qiserver.ugr.es/cod/1523467.cif
http://qiserver.ugr.es/cod/1528211.cif