http://qiserver.ugr.es/cod/1000132.cif
http://qiserver.ugr.es/cod/1000498.cif
http://qiserver.ugr.es/cod/1001538.cif
http://qiserver.ugr.es/cod/1001539.cif
http://qiserver.ugr.es/cod/1007232.cif
http://qiserver.ugr.es/cod/1539682.cif
http://qiserver.ugr.es/cod/1545878.cif
http://qiserver.ugr.es/cod/9012199.cif