http://qiserver.ugr.es/cod/9004056.cif
http://qiserver.ugr.es/cod/9004057.cif
http://qiserver.ugr.es/cod/9004058.cif
http://qiserver.ugr.es/cod/9010518.cif
http://qiserver.ugr.es/cod/9013304.cif