http://qiserver.ugr.es/cod/1531105.cif
http://qiserver.ugr.es/cod/1531626.cif
http://qiserver.ugr.es/cod/1531636.cif
http://qiserver.ugr.es/cod/1531641.cif
http://qiserver.ugr.es/cod/1532572.cif
http://qiserver.ugr.es/cod/1533905.cif