http://qiserver.ugr.es/cod/1001452.cif
http://qiserver.ugr.es/cod/1001453.cif
http://qiserver.ugr.es/cod/1001454.cif
http://qiserver.ugr.es/cod/1001455.cif
http://qiserver.ugr.es/cod/1001456.cif
http://qiserver.ugr.es/cod/1001457.cif
http://qiserver.ugr.es/cod/1008481.cif