http://qiserver.ugr.es/cod/1001431.cif
http://qiserver.ugr.es/cod/1001432.cif
http://qiserver.ugr.es/cod/1001433.cif
http://qiserver.ugr.es/cod/1001434.cif
http://qiserver.ugr.es/cod/1001435.cif
http://qiserver.ugr.es/cod/1001436.cif