http://qiserver.ugr.es/cod/1534783.cif
http://qiserver.ugr.es/cod/1535009.cif
http://qiserver.ugr.es/cod/1535013.cif
http://qiserver.ugr.es/cod/1535248.cif
http://qiserver.ugr.es/cod/1535250.cif
http://qiserver.ugr.es/cod/1536971.cif
http://qiserver.ugr.es/cod/1536974.cif
http://qiserver.ugr.es/cod/1536977.cif
http://qiserver.ugr.es/cod/1537045.cif