http://qiserver.ugr.es/cod/1541952.cif
http://qiserver.ugr.es/cod/4349729.cif
http://qiserver.ugr.es/cod/8105003.cif
http://qiserver.ugr.es/cod/9000873.cif
http://qiserver.ugr.es/cod/9007790.cif
http://qiserver.ugr.es/cod/9008271.cif