http://qiserver.ugr.es/cod/1511380.cif
http://qiserver.ugr.es/cod/1522502.cif
http://qiserver.ugr.es/cod/1522503.cif
http://qiserver.ugr.es/cod/1539827.cif
http://qiserver.ugr.es/cod/1540066.cif