http://qiserver.ugr.es/cod/9011073.cif
http://qiserver.ugr.es/cod/9011074.cif
http://qiserver.ugr.es/cod/9011075.cif
http://qiserver.ugr.es/cod/9011076.cif
http://qiserver.ugr.es/cod/9011077.cif