http://qiserver.ugr.es/cod/9017406.cif
http://qiserver.ugr.es/cod/9017407.cif
http://qiserver.ugr.es/cod/9017898.cif
http://qiserver.ugr.es/cod/9017899.cif
http://qiserver.ugr.es/cod/9017900.cif
http://qiserver.ugr.es/cod/9017901.cif
http://qiserver.ugr.es/cod/9017902.cif
http://qiserver.ugr.es/cod/9017903.cif