http://qiserver.ugr.es/cod/7209398.cif
http://qiserver.ugr.es/cod/7221465.cif
http://qiserver.ugr.es/cod/7221466.cif
http://qiserver.ugr.es/cod/7221471.cif
http://qiserver.ugr.es/cod/7221472.cif
http://qiserver.ugr.es/cod/7221480.cif
http://qiserver.ugr.es/cod/7221494.cif
http://qiserver.ugr.es/cod/7221508.cif
http://qiserver.ugr.es/cod/7221509.cif