http://qiserver.ugr.es/cod/1008429.cif
http://qiserver.ugr.es/cod/1008430.cif
http://qiserver.ugr.es/cod/1008431.cif
http://qiserver.ugr.es/cod/1008432.cif
http://qiserver.ugr.es/cod/1510210.cif
http://qiserver.ugr.es/cod/1539638.cif
http://qiserver.ugr.es/cod/1539645.cif