http://qiserver.ugr.es/cod/1521796.cif
http://qiserver.ugr.es/cod/1522477.cif
http://qiserver.ugr.es/cod/1522478.cif
http://qiserver.ugr.es/cod/1522479.cif
http://qiserver.ugr.es/cod/1522480.cif
http://qiserver.ugr.es/cod/1522481.cif
http://qiserver.ugr.es/cod/1523164.cif
http://qiserver.ugr.es/cod/1538531.cif
http://qiserver.ugr.es/cod/1538759.cif
http://qiserver.ugr.es/cod/1538762.cif
http://qiserver.ugr.es/cod/1541312.cif