http://qiserver.ugr.es/cod/1534796.cif
http://qiserver.ugr.es/cod/1534834.cif
http://qiserver.ugr.es/cod/1535595.cif
http://qiserver.ugr.es/cod/1535952.cif
http://qiserver.ugr.es/cod/1535955.cif
http://qiserver.ugr.es/cod/1537101.cif
http://qiserver.ugr.es/cod/1537698.cif