http://qiserver.ugr.es/cod/8103409.cif
http://qiserver.ugr.es/cod/8103911.cif
http://qiserver.ugr.es/cod/9008391.cif
http://qiserver.ugr.es/cod/9008392.cif
http://qiserver.ugr.es/cod/9008393.cif