http://qiserver.ugr.es/cod/6000539.cif
http://qiserver.ugr.es/cod/8104400.cif
http://qiserver.ugr.es/cod/8104464.cif
http://qiserver.ugr.es/cod/8104490.cif
http://qiserver.ugr.es/cod/8104493.cif
http://qiserver.ugr.es/cod/9008417.cif
http://qiserver.ugr.es/cod/9008418.cif
http://qiserver.ugr.es/cod/9008419.cif
http://qiserver.ugr.es/cod/9011498.cif