http://qiserver.ugr.es/cod/1000508.cif
http://qiserver.ugr.es/cod/1000509.cif
http://qiserver.ugr.es/cod/1000510.cif
http://qiserver.ugr.es/cod/1100264.cif
http://qiserver.ugr.es/cod/1100265.cif
http://qiserver.ugr.es/cod/1100266.cif