http://qiserver.ugr.es/cod/1511640.cif
http://qiserver.ugr.es/cod/1522177.cif
http://qiserver.ugr.es/cod/1522449.cif
http://qiserver.ugr.es/cod/1522450.cif
http://qiserver.ugr.es/cod/1522451.cif
http://qiserver.ugr.es/cod/1522452.cif
http://qiserver.ugr.es/cod/1522912.cif
http://qiserver.ugr.es/cod/1522913.cif