http://qiserver.ugr.es/cod/1544747.cif
http://qiserver.ugr.es/cod/1544748.cif
http://qiserver.ugr.es/cod/1544872.cif
http://qiserver.ugr.es/cod/1544873.cif
http://qiserver.ugr.es/cod/1544874.cif
http://qiserver.ugr.es/cod/1544907.cif
http://qiserver.ugr.es/cod/9012097.cif
http://qiserver.ugr.es/cod/9012098.cif