http://qiserver.ugr.es/cod/1522819.cif
http://qiserver.ugr.es/cod/1525192.cif
http://qiserver.ugr.es/cod/1537865.cif
http://qiserver.ugr.es/cod/1538054.cif
http://qiserver.ugr.es/cod/1538057.cif
http://qiserver.ugr.es/cod/1539677.cif
http://qiserver.ugr.es/cod/1539681.cif