http://qiserver.ugr.es/cod/1541695.cif
http://qiserver.ugr.es/cod/1542061.cif
http://qiserver.ugr.es/cod/1542121.cif
http://qiserver.ugr.es/cod/1542250.cif
http://qiserver.ugr.es/cod/1558538.cif
http://qiserver.ugr.es/cod/5000079.cif
http://qiserver.ugr.es/cod/5000106.cif