http://qiserver.ugr.es/cod/8103387.cif
http://qiserver.ugr.es/cod/8103458.cif
http://qiserver.ugr.es/cod/8103465.cif
http://qiserver.ugr.es/cod/8104425.cif
http://qiserver.ugr.es/cod/8104434.cif
http://qiserver.ugr.es/cod/8104531.cif