http://qiserver.ugr.es/cod/4503881.cif http://qiserver.ugr.es/cod/4503882.cif http://qiserver.ugr.es/cod/4503883.cif http://qiserver.ugr.es/cod/4503884.cif http://qiserver.ugr.es/cod/4503885.cif http://qiserver.ugr.es/cod/4503886.cif http://qiserver.ugr.es/cod/4503887.cif