http://qiserver.ugr.es/cod/9012901.cif
http://qiserver.ugr.es/cod/9012902.cif
http://qiserver.ugr.es/cod/9013995.cif
http://qiserver.ugr.es/cod/9013996.cif
http://qiserver.ugr.es/cod/9013997.cif
http://qiserver.ugr.es/cod/9014326.cif
http://qiserver.ugr.es/cod/9017462.cif
http://qiserver.ugr.es/cod/9017463.cif
http://qiserver.ugr.es/cod/9017850.cif