http://qiserver.ugr.es/cod/8103425.cif
http://qiserver.ugr.es/cod/8103439.cif
http://qiserver.ugr.es/cod/8103658.cif
http://qiserver.ugr.es/cod/8103672.cif
http://qiserver.ugr.es/cod/8103827.cif
http://qiserver.ugr.es/cod/8104220.cif
http://qiserver.ugr.es/cod/8104270.cif
http://qiserver.ugr.es/cod/8104486.cif