http://qiserver.ugr.es/cod/1531081.cif
http://qiserver.ugr.es/cod/1532192.cif
http://qiserver.ugr.es/cod/9009522.cif
http://qiserver.ugr.es/cod/9009523.cif
http://qiserver.ugr.es/cod/9011818.cif
http://qiserver.ugr.es/cod/9014023.cif
http://qiserver.ugr.es/cod/9016672.cif