http://qiserver.ugr.es/cod/1101093.cif
http://qiserver.ugr.es/cod/1101105.cif
http://qiserver.ugr.es/cod/1101107.cif
http://qiserver.ugr.es/cod/1520819.cif
http://qiserver.ugr.es/cod/1521099.cif
http://qiserver.ugr.es/cod/1521969.cif
http://qiserver.ugr.es/cod/6000268.cif