http://qiserver.ugr.es/cod/8103685.cif
http://qiserver.ugr.es/cod/8103698.cif
http://qiserver.ugr.es/cod/8103709.cif
http://qiserver.ugr.es/cod/8103721.cif
http://qiserver.ugr.es/cod/8103965.cif
http://qiserver.ugr.es/cod/9008301.cif
http://qiserver.ugr.es/cod/9008302.cif