http://qiserver.ugr.es/cod/1527100.cif
http://qiserver.ugr.es/cod/1535540.cif
http://qiserver.ugr.es/cod/9004059.cif
http://qiserver.ugr.es/cod/9004060.cif
http://qiserver.ugr.es/cod/9004061.cif
http://qiserver.ugr.es/cod/9004062.cif
http://qiserver.ugr.es/cod/9017149.cif