http://qiserver.ugr.es/cod/1008819.cif
http://qiserver.ugr.es/cod/1008820.cif
http://qiserver.ugr.es/cod/1008821.cif
http://qiserver.ugr.es/cod/1008822.cif
http://qiserver.ugr.es/cod/1008823.cif
http://qiserver.ugr.es/cod/1008824.cif