http://qiserver.ugr.es/cod/1517989.cif
http://qiserver.ugr.es/cod/1519497.cif
http://qiserver.ugr.es/cod/1534095.cif
http://qiserver.ugr.es/cod/1540711.cif
http://qiserver.ugr.es/cod/1542270.cif
http://qiserver.ugr.es/cod/1542315.cif
http://qiserver.ugr.es/cod/1544707.cif