http://qiserver.ugr.es/cod/1511453.cif
http://qiserver.ugr.es/cod/1511741.cif
http://qiserver.ugr.es/cod/1529583.cif
http://qiserver.ugr.es/cod/1530501.cif
http://qiserver.ugr.es/cod/1530603.cif