http://qiserver.ugr.es/cod/2310722.cif
http://qiserver.ugr.es/cod/2310723.cif
http://qiserver.ugr.es/cod/2310730.cif
http://qiserver.ugr.es/cod/2310820.cif
http://qiserver.ugr.es/cod/2310821.cif
http://qiserver.ugr.es/cod/9007496.cif