http://qiserver.ugr.es/cod/1556851.cif
http://qiserver.ugr.es/cod/1556852.cif
http://qiserver.ugr.es/cod/1556853.cif
http://qiserver.ugr.es/cod/1556854.cif
http://qiserver.ugr.es/cod/1556855.cif
http://qiserver.ugr.es/cod/1556856.cif
http://qiserver.ugr.es/cod/1556899.cif
http://qiserver.ugr.es/cod/1557733.cif
http://qiserver.ugr.es/cod/1557734.cif
http://qiserver.ugr.es/cod/1559169.cif