http://qiserver.ugr.es/cod/4030481.cif
http://qiserver.ugr.es/cod/4307155.cif
http://qiserver.ugr.es/cod/9009443.cif
http://qiserver.ugr.es/cod/9009475.cif
http://qiserver.ugr.es/cod/9012812.cif
http://qiserver.ugr.es/cod/9016100.cif