http://qiserver.ugr.es/cod/4512593.cif
http://qiserver.ugr.es/cod/4512594.cif
http://qiserver.ugr.es/cod/4512595.cif
http://qiserver.ugr.es/cod/4512596.cif
http://qiserver.ugr.es/cod/4512894.cif
http://qiserver.ugr.es/cod/4516815.cif
http://qiserver.ugr.es/cod/4516816.cif