http://qiserver.ugr.es/cod/1507756.cif
http://qiserver.ugr.es/cod/1507757.cif
http://qiserver.ugr.es/cod/1512120.cif
http://qiserver.ugr.es/cod/1512121.cif
http://qiserver.ugr.es/cod/1512122.cif
http://qiserver.ugr.es/cod/1512123.cif
http://qiserver.ugr.es/cod/1512124.cif
http://qiserver.ugr.es/cod/1512125.cif
http://qiserver.ugr.es/cod/1545918.cif
http://qiserver.ugr.es/cod/1545919.cif