http://qiserver.ugr.es/cod/4314060.cif
http://qiserver.ugr.es/cod/4332732.cif
http://qiserver.ugr.es/cod/7104402.cif
http://qiserver.ugr.es/cod/7714801.cif
http://qiserver.ugr.es/cod/9011958.cif