http://qiserver.ugr.es/cod/1557361.cif
http://qiserver.ugr.es/cod/1557362.cif
http://qiserver.ugr.es/cod/1557386.cif
http://qiserver.ugr.es/cod/1557835.cif
http://qiserver.ugr.es/cod/1557951.cif
http://qiserver.ugr.es/cod/1557952.cif
http://qiserver.ugr.es/cod/1558315.cif
http://qiserver.ugr.es/cod/1558841.cif
http://qiserver.ugr.es/cod/1558981.cif