http://qiserver.ugr.es/cod/1522870.cif
http://qiserver.ugr.es/cod/1522871.cif
http://qiserver.ugr.es/cod/1522872.cif
http://qiserver.ugr.es/cod/1522873.cif
http://qiserver.ugr.es/cod/1522874.cif
http://qiserver.ugr.es/cod/1537645.cif