http://qiserver.ugr.es/cod/1537754.cif
http://qiserver.ugr.es/cod/9000083.cif
http://qiserver.ugr.es/cod/9000084.cif
http://qiserver.ugr.es/cod/9000085.cif
http://qiserver.ugr.es/cod/9000086.cif