http://qiserver.ugr.es/cod/1539852.cif
http://qiserver.ugr.es/cod/1539855.cif
http://qiserver.ugr.es/cod/1540160.cif
http://qiserver.ugr.es/cod/1541051.cif
http://qiserver.ugr.es/cod/1541052.cif
http://qiserver.ugr.es/cod/1541053.cif
http://qiserver.ugr.es/cod/1541054.cif
http://qiserver.ugr.es/cod/1541163.cif