http://qiserver.ugr.es/cod/9009387.cif
http://qiserver.ugr.es/cod/9009388.cif
http://qiserver.ugr.es/cod/9009389.cif
http://qiserver.ugr.es/cod/9009390.cif
http://qiserver.ugr.es/cod/9009391.cif
http://qiserver.ugr.es/cod/9009392.cif
http://qiserver.ugr.es/cod/9011751.cif