http://qiserver.ugr.es/cod/1529939.cif
http://qiserver.ugr.es/cod/1534157.cif
http://qiserver.ugr.es/cod/1537125.cif
http://qiserver.ugr.es/cod/1537129.cif
http://qiserver.ugr.es/cod/1541951.cif
http://qiserver.ugr.es/cod/1541952.cif
http://qiserver.ugr.es/cod/1548805.cif