http://qiserver.ugr.es/cod/1568599.cif
http://qiserver.ugr.es/cod/1569067.cif
http://qiserver.ugr.es/cod/1569068.cif
http://qiserver.ugr.es/cod/1569470.cif
http://qiserver.ugr.es/cod/1569471.cif
http://qiserver.ugr.es/cod/1569472.cif
http://qiserver.ugr.es/cod/1570055.cif