http://qiserver.ugr.es/cod/1509772.cif
http://qiserver.ugr.es/cod/1524825.cif
http://qiserver.ugr.es/cod/1524826.cif
http://qiserver.ugr.es/cod/1524827.cif
http://qiserver.ugr.es/cod/1537708.cif
http://qiserver.ugr.es/cod/1537710.cif
http://qiserver.ugr.es/cod/1537712.cif