http://qiserver.ugr.es/cod/1507762.cif
http://qiserver.ugr.es/cod/1507763.cif
http://qiserver.ugr.es/cod/1507764.cif
http://qiserver.ugr.es/cod/1532688.cif
http://qiserver.ugr.es/cod/1532850.cif
http://qiserver.ugr.es/cod/1533137.cif
http://qiserver.ugr.es/cod/1533574.cif
http://qiserver.ugr.es/cod/9012499.cif