http://qiserver.ugr.es/cod/1534809.cif
http://qiserver.ugr.es/cod/1534812.cif
http://qiserver.ugr.es/cod/1534815.cif
http://qiserver.ugr.es/cod/1536885.cif
http://qiserver.ugr.es/cod/1537120.cif
http://qiserver.ugr.es/cod/1537123.cif