http://qiserver.ugr.es/cod/1511600.cif
http://qiserver.ugr.es/cod/1522179.cif
http://qiserver.ugr.es/cod/1522180.cif
http://qiserver.ugr.es/cod/1522182.cif
http://qiserver.ugr.es/cod/1522575.cif
http://qiserver.ugr.es/cod/1524743.cif
http://qiserver.ugr.es/cod/1525059.cif