http://qiserver.ugr.es/cod/1537235.cif
http://qiserver.ugr.es/cod/9012846.cif
http://qiserver.ugr.es/cod/9012847.cif
http://qiserver.ugr.es/cod/9012848.cif
http://qiserver.ugr.es/cod/9012849.cif
http://qiserver.ugr.es/cod/9014701.cif
http://qiserver.ugr.es/cod/9016215.cif
http://qiserver.ugr.es/cod/9016559.cif