http://qiserver.ugr.es/cod/1521267.cif
http://qiserver.ugr.es/cod/1521268.cif
http://qiserver.ugr.es/cod/1521269.cif
http://qiserver.ugr.es/cod/1521270.cif
http://qiserver.ugr.es/cod/1521271.cif
http://qiserver.ugr.es/cod/1521272.cif
http://qiserver.ugr.es/cod/1521273.cif
http://qiserver.ugr.es/cod/1521274.cif
http://qiserver.ugr.es/cod/1521341.cif
http://qiserver.ugr.es/cod/1521342.cif