http://qiserver.ugr.es/cod/7120979.cif
http://qiserver.ugr.es/cod/7120980.cif
http://qiserver.ugr.es/cod/7120981.cif
http://qiserver.ugr.es/cod/7120982.cif
http://qiserver.ugr.es/cod/7121272.cif