http://qiserver.ugr.es/cod/1509176.cif
http://qiserver.ugr.es/cod/1510854.cif
http://qiserver.ugr.es/cod/1530821.cif
http://qiserver.ugr.es/cod/1530822.cif
http://qiserver.ugr.es/cod/1530823.cif
http://qiserver.ugr.es/cod/1530918.cif
http://qiserver.ugr.es/cod/1530919.cif