http://qiserver.ugr.es/cod/1522290.cif
http://qiserver.ugr.es/cod/1522292.cif
http://qiserver.ugr.es/cod/1524760.cif
http://qiserver.ugr.es/cod/1524761.cif
http://qiserver.ugr.es/cod/1538870.cif
http://qiserver.ugr.es/cod/1539110.cif
http://qiserver.ugr.es/cod/2002355.cif