http://qiserver.ugr.es/cod/1535701.cif
http://qiserver.ugr.es/cod/9009443.cif
http://qiserver.ugr.es/cod/9009444.cif
http://qiserver.ugr.es/cod/9009445.cif
http://qiserver.ugr.es/cod/9009446.cif
http://qiserver.ugr.es/cod/9011792.cif