http://qiserver.ugr.es/cod/1000439.cif
http://qiserver.ugr.es/cod/1001080.cif
http://qiserver.ugr.es/cod/2020375.cif
http://qiserver.ugr.es/cod/9000551.cif
http://qiserver.ugr.es/cod/9001302.cif
http://qiserver.ugr.es/cod/9017255.cif
http://qiserver.ugr.es/cod/9017715.cif
http://qiserver.ugr.es/cod/9017716.cif