http://qiserver.ugr.es/cod/9009953.cif
http://qiserver.ugr.es/cod/9012643.cif
http://qiserver.ugr.es/cod/9012644.cif
http://qiserver.ugr.es/cod/9012645.cif
http://qiserver.ugr.es/cod/9012646.cif
http://qiserver.ugr.es/cod/9012647.cif
http://qiserver.ugr.es/cod/9017416.cif
http://qiserver.ugr.es/cod/9017417.cif