http://qiserver.ugr.es/cod/1000301.cif
http://qiserver.ugr.es/cod/1000302.cif
http://qiserver.ugr.es/cod/1000303.cif
http://qiserver.ugr.es/cod/1000304.cif
http://qiserver.ugr.es/cod/1001477.cif
http://qiserver.ugr.es/cod/1001478.cif
http://qiserver.ugr.es/cod/1001479.cif
http://qiserver.ugr.es/cod/1001480.cif
http://qiserver.ugr.es/cod/1001697.cif
http://qiserver.ugr.es/cod/1008712.cif