http://qiserver.ugr.es/cod/1537477.cif
http://qiserver.ugr.es/cod/1537478.cif
http://qiserver.ugr.es/cod/1537479.cif
http://qiserver.ugr.es/cod/1537480.cif
http://qiserver.ugr.es/cod/1537481.cif
http://qiserver.ugr.es/cod/1537482.cif