http://qiserver.ugr.es/cod/1001712.cif
http://qiserver.ugr.es/cod/1532290.cif
http://qiserver.ugr.es/cod/4000987.cif
http://qiserver.ugr.es/cod/4000988.cif
http://qiserver.ugr.es/cod/4000989.cif
http://qiserver.ugr.es/cod/4000990.cif
http://qiserver.ugr.es/cod/9004102.cif
http://qiserver.ugr.es/cod/9012815.cif