http://qiserver.ugr.es/cod/9013067.cif
http://qiserver.ugr.es/cod/9013068.cif
http://qiserver.ugr.es/cod/9013069.cif
http://qiserver.ugr.es/cod/9013070.cif
http://qiserver.ugr.es/cod/9013071.cif