http://qiserver.ugr.es/cod/1537965.cif
http://qiserver.ugr.es/cod/1537967.cif
http://qiserver.ugr.es/cod/9009884.cif
http://qiserver.ugr.es/cod/9009885.cif
http://qiserver.ugr.es/cod/9012472.cif
http://qiserver.ugr.es/cod/9012473.cif
http://qiserver.ugr.es/cod/9012474.cif