http://qiserver.ugr.es/cod/1528836.cif
http://qiserver.ugr.es/cod/1528837.cif
http://qiserver.ugr.es/cod/1528897.cif
http://qiserver.ugr.es/cod/1535414.cif
http://qiserver.ugr.es/cod/1535417.cif
http://qiserver.ugr.es/cod/1537010.cif