http://qiserver.ugr.es/cod/1530008.cif
http://qiserver.ugr.es/cod/1530602.cif
http://qiserver.ugr.es/cod/1530621.cif
http://qiserver.ugr.es/cod/1530767.cif
http://qiserver.ugr.es/cod/1530768.cif
http://qiserver.ugr.es/cod/1530769.cif
http://qiserver.ugr.es/cod/9009537.cif