http://qiserver.ugr.es/cod/1531664.cif
http://qiserver.ugr.es/cod/1531666.cif
http://qiserver.ugr.es/cod/1531668.cif
http://qiserver.ugr.es/cod/1531670.cif
http://qiserver.ugr.es/cod/1531672.cif
http://qiserver.ugr.es/cod/1532989.cif
http://qiserver.ugr.es/cod/1532991.cif
http://qiserver.ugr.es/cod/9017519.cif
http://qiserver.ugr.es/cod/9017520.cif