http://qiserver.ugr.es/cod/1511029.cif
http://qiserver.ugr.es/cod/1511032.cif
http://qiserver.ugr.es/cod/1522422.cif
http://qiserver.ugr.es/cod/1533037.cif
http://qiserver.ugr.es/cod/1533038.cif
http://qiserver.ugr.es/cod/1539165.cif
http://qiserver.ugr.es/cod/1539600.cif
http://qiserver.ugr.es/cod/1540809.cif