http://qiserver.ugr.es/cod/1521159.cif
http://qiserver.ugr.es/cod/1521160.cif
http://qiserver.ugr.es/cod/1521161.cif
http://qiserver.ugr.es/cod/1521162.cif
http://qiserver.ugr.es/cod/1521163.cif
http://qiserver.ugr.es/cod/1521164.cif
http://qiserver.ugr.es/cod/1521165.cif
http://qiserver.ugr.es/cod/1521166.cif
http://qiserver.ugr.es/cod/1521167.cif