http://qiserver.ugr.es/cod/2020047.cif
http://qiserver.ugr.es/cod/2105662.cif
http://qiserver.ugr.es/cod/2108672.cif
http://qiserver.ugr.es/cod/2219455.cif
http://qiserver.ugr.es/cod/4132332.cif
http://qiserver.ugr.es/cod/7123758.cif
http://qiserver.ugr.es/cod/9004388.cif
http://qiserver.ugr.es/cod/9005584.cif
http://qiserver.ugr.es/cod/9011171.cif
http://qiserver.ugr.es/cod/9011172.cif
http://qiserver.ugr.es/cod/9011399.cif