http://qiserver.ugr.es/cod/1539848.cif
http://qiserver.ugr.es/cod/1540161.cif
http://qiserver.ugr.es/cod/1540162.cif
http://qiserver.ugr.es/cod/1540163.cif
http://qiserver.ugr.es/cod/1540177.cif
http://qiserver.ugr.es/cod/1540178.cif
http://qiserver.ugr.es/cod/1540370.cif
http://qiserver.ugr.es/cod/1541046.cif
http://qiserver.ugr.es/cod/1541068.cif