http://qiserver.ugr.es/cod/1521878.cif
http://qiserver.ugr.es/cod/1524955.cif
http://qiserver.ugr.es/cod/1526038.cif
http://qiserver.ugr.es/cod/1526132.cif
http://qiserver.ugr.es/cod/1526349.cif
http://qiserver.ugr.es/cod/1526351.cif
http://qiserver.ugr.es/cod/1526632.cif
http://qiserver.ugr.es/cod/1527037.cif