http://qiserver.ugr.es/cod/1000025.cif
http://qiserver.ugr.es/cod/1509274.cif
http://qiserver.ugr.es/cod/1522520.cif
http://qiserver.ugr.es/cod/1528181.cif
http://qiserver.ugr.es/cod/1548807.cif
http://qiserver.ugr.es/cod/2002550.cif