http://qiserver.ugr.es/cod/9009377.cif
http://qiserver.ugr.es/cod/9009378.cif
http://qiserver.ugr.es/cod/9009379.cif
http://qiserver.ugr.es/cod/9009380.cif
http://qiserver.ugr.es/cod/9009381.cif
http://qiserver.ugr.es/cod/9009382.cif
http://qiserver.ugr.es/cod/9016367.cif