http://qiserver.ugr.es/cod/1529547.cif
http://qiserver.ugr.es/cod/1529892.cif
http://qiserver.ugr.es/cod/1529893.cif
http://qiserver.ugr.es/cod/1529923.cif
http://qiserver.ugr.es/cod/1530223.cif
http://qiserver.ugr.es/cod/1530751.cif
http://qiserver.ugr.es/cod/1539331.cif