http://qiserver.ugr.es/cod/9009511.cif
http://qiserver.ugr.es/cod/9011803.cif
http://qiserver.ugr.es/cod/9011804.cif
http://qiserver.ugr.es/cod/9013942.cif
http://qiserver.ugr.es/cod/9015037.cif
http://qiserver.ugr.es/cod/9015640.cif
http://qiserver.ugr.es/cod/9016617.cif