http://qiserver.ugr.es/cod/7203719.cif
http://qiserver.ugr.es/cod/7203730.cif
http://qiserver.ugr.es/cod/7203755.cif
http://qiserver.ugr.es/cod/7203759.cif
http://qiserver.ugr.es/cod/7203760.cif
http://qiserver.ugr.es/cod/7203761.cif
http://qiserver.ugr.es/cod/7203787.cif
http://qiserver.ugr.es/cod/7203796.cif
http://qiserver.ugr.es/cod/7203832.cif