http://qiserver.ugr.es/cod/8103633.cif
http://qiserver.ugr.es/cod/8103725.cif
http://qiserver.ugr.es/cod/8104216.cif
http://qiserver.ugr.es/cod/8104259.cif
http://qiserver.ugr.es/cod/8104260.cif
http://qiserver.ugr.es/cod/8104504.cif