http://qiserver.ugr.es/cod/4314915.cif
http://qiserver.ugr.es/cod/4510600.cif
http://qiserver.ugr.es/cod/7032878.cif
http://qiserver.ugr.es/cod/9001238.cif
http://qiserver.ugr.es/cod/9016140.cif