http://qiserver.ugr.es/cod/4331401.cif
http://qiserver.ugr.es/cod/4331423.cif
http://qiserver.ugr.es/cod/4331444.cif
http://qiserver.ugr.es/cod/4344348.cif
http://qiserver.ugr.es/cod/4344363.cif
http://qiserver.ugr.es/cod/4344383.cif
http://qiserver.ugr.es/cod/9012516.cif
http://qiserver.ugr.es/cod/9012517.cif