http://qiserver.ugr.es/cod/1523826.cif
http://qiserver.ugr.es/cod/1534160.cif
http://qiserver.ugr.es/cod/1534161.cif
http://qiserver.ugr.es/cod/1534162.cif
http://qiserver.ugr.es/cod/9012327.cif
http://qiserver.ugr.es/cod/9012328.cif
http://qiserver.ugr.es/cod/9013459.cif