http://qiserver.ugr.es/cod/1539673.cif
http://qiserver.ugr.es/cod/1540095.cif
http://qiserver.ugr.es/cod/1540104.cif
http://qiserver.ugr.es/cod/1540105.cif
http://qiserver.ugr.es/cod/1540106.cif
http://qiserver.ugr.es/cod/1540927.cif
http://qiserver.ugr.es/cod/1541041.cif
http://qiserver.ugr.es/cod/1541042.cif