http://qiserver.ugr.es/cod/1522806.cif
http://qiserver.ugr.es/cod/1523381.cif
http://qiserver.ugr.es/cod/1527974.cif
http://qiserver.ugr.es/cod/1528331.cif
http://qiserver.ugr.es/cod/1537660.cif
http://qiserver.ugr.es/cod/1537662.cif