http://qiserver.ugr.es/cod/1001091.cif
http://qiserver.ugr.es/cod/1001092.cif
http://qiserver.ugr.es/cod/1001093.cif
http://qiserver.ugr.es/cod/1001094.cif
http://qiserver.ugr.es/cod/1001095.cif
http://qiserver.ugr.es/cod/9012841.cif