http://qiserver.ugr.es/cod/1561612.cif
http://qiserver.ugr.es/cod/1561613.cif
http://qiserver.ugr.es/cod/1561614.cif
http://qiserver.ugr.es/cod/1561615.cif
http://qiserver.ugr.es/cod/1561616.cif
http://qiserver.ugr.es/cod/1561617.cif
http://qiserver.ugr.es/cod/1561618.cif